Amnesia: Pathologic partial or complete loss of the ability to recall past experiences (AMNESIA, RETROGRADE) or to form new memories (AMNESIA, ANTEROGRADE). This condition may be of organic or psychologic origin. Organic forms of amnesia are usually associated with dysfunction of the DIENCEPHALON or HIPPOCAMPUS. (From Adams et al., Principles of Neurology, 6th ed, pp426-7)Amnesia, Retrograde: Loss of the ability to recall information that had been previously encoded in memory prior to a specified or approximate point in time. This process may be organic or psychogenic in origin. Organic forms may be associated with CRANIOCEREBRAL TRAUMA; CEREBROVASCULAR ACCIDENTS; SEIZURES; DEMENTIA; and a wide variety of other conditions that impair cerebral function. (From Adams et al., Principles of Neurology, 6th ed, pp426-9)Amnesia, Anterograde: Loss of the ability to form new memories beyond a certain point in time. This condition may be organic or psychogenic in origin. Organically induced anterograde amnesia may follow CRANIOCEREBRAL TRAUMA; SEIZURES; ANOXIA; and other conditions which adversely affect neural structures associated with memory formation (e.g., the HIPPOCAMPUS; FORNIX (BRAIN); MAMMILLARY BODIES; and ANTERIOR THALAMIC NUCLEI). (From Memory 1997 Jan-Mar;5(1-2):49-71)Amnesia, Transient Global: A syndrome characterized by a transient loss of the ability to form new memories. It primarily occurs in middle aged or elderly individuals, and episodes may last from minutes to hours. During the period of amnesia, immediate and recent memory abilities are impaired, but the level of consciousness and ability to perform other intellectual tasks are preserved. The condition is related to bilateral dysfunction of the medial portions of each TEMPORAL LOBE. Complete recovery normally occurs, and recurrences are unusual. (From Adams et al., Principles of Neurology, 6th ed, pp429-30)Korsakoff Syndrome: An acquired cognitive disorder characterized by inattentiveness and the inability to form short term memories. This disorder is frequently associated with chronic ALCOHOLISM; but it may also result from dietary deficiencies; CRANIOCEREBRAL TRAUMA; NEOPLASMS; CEREBROVASCULAR DISORDERS; ENCEPHALITIS; EPILEPSY; and other conditions. (Adams et al., Principles of Neurology, 6th ed, p1139)Memory: Complex mental function having four distinct phases: (1) memorizing or learning, (2) retention, (3) recall, and (4) recognition. Clinically, it is usually subdivided into immediate, recent, and remote memory.Alcohol Amnestic Disorder: A mental disorder associated with chronic ethanol abuse (ALCOHOLISM) and nutritional deficiencies characterized by short term memory loss, confabulations, and disturbances of attention. (Adams et al., Principles of Neurology, 6th ed, p1139)Retention (Psychology): The persistence to perform a learned behavior (facts or experiences) after an interval has elapsed in which there has been no performance or practice of the behavior.Ischemic Attack, Transient: Brief reversible episodes of focal, nonconvulsive ischemic dysfunction of the brain having a duration of less than 24 hours, and usually less than one hour, caused by transient thrombotic or embolic blood vessel occlusion or stenosis. Events may be classified by arterial distribution, temporal pattern, or etiology (e.g., embolic vs. thrombotic). (From Adams et al., Principles of Neurology, 6th ed, pp814-6)Mental Recall: The process whereby a representation of past experience is elicited.Avoidance Learning: A response to a cue that is instrumental in avoiding a noxious experience.Pyrithiamine: A thiamine antagonist due to its inhibition of thiamine pyrophosphorylation. It is used to produce thiamine deficiency.Diencephalon: The paired caudal parts of the PROSENCEPHALON from which the THALAMUS; HYPOTHALAMUS; EPITHALAMUS; and SUBTHALAMUS are derived.Scopolamine Hydrobromide: An alkaloid from SOLANACEAE, especially DATURA and SCOPOLIA. Scopolamine and its quaternary derivatives act as antimuscarinics like ATROPINE, but may have more central nervous system effects. Among the many uses are as an anesthetic premedication, in URINARY INCONTINENCE, in MOTION SICKNESS, as an antispasmodic, and as a mydriatic and cycloplegic.Neuropsychological Tests: Tests designed to assess neurological function associated with certain behaviors. They are used in diagnosing brain dysfunction or damage and central nervous system disorders or injury.Confusion: A mental state characterized by bewilderment, emotional disturbance, lack of clear thinking, and perceptual disorientation.Unconsciousness: Loss of the ability to maintain awareness of self and environment combined with markedly reduced responsiveness to environmental stimuli. (From Adams et al., Principles of Neurology, 6th ed, pp344-5)Hippocampus: A curved elevation of GRAY MATTER extending the entire length of the floor of the TEMPORAL HORN of the LATERAL VENTRICLE (see also TEMPORAL LOBE). The hippocampus proper, subiculum, and DENTATE GYRUS constitute the hippocampal formation. Sometimes authors include the ENTORHINAL CORTEX in the hippocampal formation.Temporal Lobe: Lower lateral part of the cerebral hemisphere responsible for auditory, olfactory, and semantic processing. It is located inferior to the lateral fissure and anterior to the OCCIPITAL LOBE.Autobiography as Topic: The life of a person written by himself or herself. (Harrod's Librarians' Glossary, 7th ed)Thalamic Diseases: Disorders of the centrally located thalamus, which integrates a wide range of cortical and subcortical information. Manifestations include sensory loss, MOVEMENT DISORDERS; ATAXIA, pain syndromes, visual disorders, a variety of neuropsychological conditions, and COMA. Relatively common etiologies include CEREBROVASCULAR DISORDERS; CRANIOCEREBRAL TRAUMA; BRAIN NEOPLASMS; BRAIN HYPOXIA; INTRACRANIAL HEMORRHAGES; and infectious processes.Memory Disorders: Disturbances in registering an impression, in the retention of an acquired impression, or in the recall of an impression. Memory impairments are associated with DEMENTIA; CRANIOCEREBRAL TRAUMA; ENCEPHALITIS; ALCOHOLISM (see also ALCOHOL AMNESTIC DISORDER); SCHIZOPHRENIA; and other conditions.Midazolam: A short-acting hypnotic-sedative drug with anxiolytic and amnestic properties. It is used in dentistry, cardiac surgery, endoscopic procedures, as preanesthetic medication, and as an adjunct to local anesthesia. The short duration and cardiorespiratory stability makes it useful in poor-risk, elderly, and cardiac patients. It is water-soluble at pH less than 4 and lipid-soluble at physiological pH.Craniocerebral Trauma: Traumatic injuries involving the cranium and intracranial structures (i.e., BRAIN; CRANIAL NERVES; MENINGES; and other structures). Injuries may be classified by whether or not the skull is penetrated (i.e., penetrating vs. nonpenetrating) or whether there is an associated hemorrhage.Time Factors: Elements of limited time intervals, contributing to particular results or situations.Learning: Relatively permanent change in behavior that is the result of past experience or practice. The concept includes the acquisition of knowledge.Anisomycin: An antibiotic isolated from various Streptomyces species. It interferes with protein and DNA synthesis by inhibiting peptidyl transferase or the 80S ribosome system.Mamillary Bodies: A pair of nuclei and associated gray matter in the interpeduncular space rostral to the posterior perforated substance in the posterior hypothalamus.Paired-Associate Learning: Learning in which the subject must respond with one word or syllable when presented with another word or syllable.Magnetic Resonance Imaging: Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques.Thiamine Deficiency: A nutritional condition produced by a deficiency of THIAMINE in the diet, characterized by anorexia, irritability, and weight loss. Later, patients experience weakness, peripheral neuropathy, headache, and tachycardia. In addition to being caused by a poor diet, thiamine deficiency in the United States most commonly occurs as a result of alcoholism, since ethanol interferes with thiamine absorption. In countries relying on polished rice as a dietary staple, BERIBERI prevalence is very high. (From Cecil Textbook of Medicine, 19th ed, p1171)Preanesthetic Medication: Drugs administered before an anesthetic to decrease a patient's anxiety and control the effects of that anesthetic.Recognition (Psychology): The knowledge or perception that someone or something present has been previously encountered.Brain Damage, Chronic: A condition characterized by long-standing brain dysfunction or damage, usually of three months duration or longer. Potential etiologies include BRAIN INFARCTION; certain NEURODEGENERATIVE DISORDERS; CRANIOCEREBRAL TRAUMA; ANOXIA, BRAIN; ENCEPHALITIS; certain NEUROTOXICITY SYNDROMES; metabolic disorders (see BRAIN DISEASES, METABOLIC); and other conditions.Verbal Learning: Learning to respond verbally to a verbal stimulus cue.Anterior Thalamic Nuclei: Three nuclei located beneath the dorsal surface of the most rostral part of the thalamus. The group includes the anterodorsal nucleus, anteromedial nucleus, and anteroventral nucleus. All receive connections from the MAMILLARY BODY and BRAIN FORNIX, and project fibers to the CINGULATE BODY.Calcium: A basic element found in nearly all organized tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes.Multiple Personality Disorder: A dissociative disorder in which the individual adopts two or more distinct personalities. Each personality is a fully integrated and complex unit with memories, behavior patterns and social friendships. Transition from one personality to another is sudden.Encyclopedias as Topic: Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)Venous Valves: Flaps within the VEINS that allow the blood to flow only in one direction. They are usually in the medium size veins that carry blood to the heart against gravity.Cerebrovascular Circulation: The circulation of blood through the BLOOD VESSELS of the BRAIN.Technetium Tc 99m Exametazime: A gamma-emitting RADIONUCLIDE IMAGING agent used in the evaluation of regional cerebral blood flow and in non-invasive dynamic biodistribution studies and MYOCARDIAL PERFUSION IMAGING. It has also been used to label leukocytes in the investigation of INFLAMMATORY BOWEL DISEASES.Blogging: Using an INTERNET based personal journal which may consist of reflections, comments, and often hyperlinks.Baseball: A competitive nine-member team sport including softball.Copyright: It is a form of protection provided by law. In the United States this protection is granted to authors of original works of authorship, including literary, dramatic, musical, artistic, and certain other intellectual works. This protection is available to both published and unpublished works. (from Circular of the United States Copyright Office, 6/30/2008)Neurology: A medical specialty concerned with the study of the structures, functions, and diseases of the nervous system.Diffusion: The tendency of a gas or solute to pass from a point of higher pressure or concentration to a point of lower pressure or concentration and to distribute itself throughout the available space. Diffusion, especially FACILITATED DIFFUSION, is a major mechanism of BIOLOGICAL TRANSPORT.Diffusion Magnetic Resonance Imaging: A diagnostic technique that incorporates the measurement of molecular diffusion (such as water or metabolites) for tissue assessment by MRI. The degree of molecular movement can be measured by changes of apparent diffusion coefficient (ADC) with time, as reflected by tissue microstructure. Diffusion MRI has been used to study BRAIN ISCHEMIA and tumor response to treatment.Peripheral Blood Stem Cell Transplantation: Transplantation of stem cells collected from the peripheral blood. It is a less invasive alternative to direct marrow harvesting of hematopoietic stem cells. Enrichment of stem cells in peripheral blood can be achieved by inducing mobilization of stem cells from the BONE MARROW.Transplantation, Autologous: Transplantation of an individual's own tissue from one site to another site.Hematopoietic Stem Cell Transplantation: Transfer of HEMATOPOIETIC STEM CELLS from BONE MARROW or BLOOD between individuals within the same species (TRANSPLANTATION, HOMOLOGOUS) or transfer within the same individual (TRANSPLANTATION, AUTOLOGOUS). Hematopoietic stem cell transplantation has been used as an alternative to BONE MARROW TRANSPLANTATION in the treatment of a variety of neoplasms.Hematopoietic Stem Cell Mobilization: The release of stem cells from the bone marrow into the peripheral blood circulation for the purpose of leukapheresis, prior to stem cell transplantation. Hematopoietic growth factors or chemotherapeutic agents often are used to stimulate the mobilization.
Lack of evidence of acute ischemic tissue change in transient global amnesia on single-shot echo-planar diffusion-weighted MRI. (1/30)
BACKGROUND AND PURPOSE: There is uncertainty concerning the etiology of transient global amnesia (TGA). Previous CT and MRI studies have indicated that permanent structural abnormality is rare in TGA. Diffusion-weighted (DW) MRI is very sensitive to early ischemic parenchymal changes and has recently demonstrated embolic infarction in the posterior cerebral artery territory in 2 TGA patients. We report the findings of DW MRI in 8 patients in acute stages of TGA. METHODS: Conventional and echo-planar DW MRI was performed in 2 patients in the active phase and 6 patients in the recovery phase (1 to 8 hours after cessation of anterograde memory dysfunction) of spontaneously occurring TGA. RESULTS: None of the patients showed signs of hyperintensity on DW images or hypointensity on quantitative apparent diffusion coefficient (ADC) maps to suggest regional decreases of water mobility or acute T2 changes on transverse or coronal slices. CONCLUSIONS: We were unable to detect ADC or acute T2 changes with echo-planar DW MRI in patients with TGA, which suggests that mechanisms other than ischemic infarction may cause TGA. We did not identify spreading depression-associated changes of the ADC. Further refinement of MRI sequences may be necessary to detect subtle or transient signal change in brain parenchyma. (+info)Relationship between migraine and cardiac and pulmonary right-to-left shunts. (2/30)
A relationship between migraine with aura and the presence of right-to-left shunts has been reported in two studies. Right-to-left shunts are also associated with some forms of decompression illness. While conducting research in divers with decompression illness, it was our impression that divers with a large shunt often had a history of migraine with aura in everyday life and after dives. Therefore we routinely asked all divers about migraine symptoms. The medical records of the last 200 individuals referred for investigation of decompression illness were reviewed to determine the association between right-to-left shunts and migraine aura after diving, and migraine in daily life unconnected with diving. Migraine with aura in daily life unconnected with diving occurred significantly more frequently in individuals who had a large shunt which was present at rest (38 of 80; 47.5%) compared with those who had a shunt which was smaller or only seen after a Valsalva manoeuvre (four of 40; 10%) or those with no shunt (11 of 80; 13.8%) (P<0.001). Hemiplegic migraine occurred in 10 divers, each of whom had a shunt that was present at rest; in eight of these cases the shunt was large. The prevalence of migraine without aura was similar in all groups. Post-dive migraine aura was significantly more frequent in individuals who had a large shunt present at rest (21 of 80; 26.3%) compared with those who had a shunt that was smaller or only seen after a Valsalva manoeuvre (five of 40; 12.5%) or no shunt (one of 80; 1.3%) (P<0.001). Thus individuals with a large right-to-left shunt have an increased prevalence of migraine with aura in daily life unconnected with diving, and they also have an increased incidence of migraine aura after dives, but only when the dives liberate venous bubbles. These data suggest the possibility that, in some individuals, right-to-left shunts have a role in the aetiology of migraine with aura. The observations suggest that paradoxical gas embolism may precipitate migraine with aura. (+info)Contrast study on cognitive function with MRI and positron emission tomography imaging in transient global amnesia. (3/30)
OBJECTIVE: To study cognitive function and cerebral metabolic changes in patients with transient global amnesia (TGA). METHODS: Three patients with TGA were given mini-mental state examination (MMSE), revised Wechsler memory scale (WMS-R) examination and magnetic resonance imaging (MRI) scans after they had been diagnosed as TGA. Using (18)F labelled deoxyglucose as tracer, patients were given a positron emission tomography (PET) examination at different periods during recovery. RESULTS: No obvious abnormality was found in MMSE and MRI scans in the three patients. However, WMS-R examination and cerebral PET imaging displayed cognitive dysfunction of varying degrees and low metabolism in local areas related to memory in 2 of 3 patients. CONCLUSIONS: In TGA patients, cognitive function and cerebral metabolic levels are closely correlated with duration of symptoms. It is necessary to stop the TGA attack as quickly as possible early time. (+info)Working memory and executive functions in transient global amnesia. (4/30)
Transient global amnesia (TGA) is usually considered to produce a profound impairment of long-term episodic memory, while at the same time sparing working memory. However, this neuropsychological dissociation has rarely been examined in detail. While a few studies have assessed some components of working memory in TGA, the results that have been obtained are far from conclusive. To clarify this issue, we carried out a comprehensive investigation of working memory in 10 patients during a TGA attack. In the first study, we report the results from three patients examined with a battery of neuropsychological tests designed to assess each of the three subcomponents of Baddeley's model of working memory. In a second study, seven different patients underwent neuropsychological investigations that focused specifically on the central executive system, using a protocol derived from a study by Miyake and colleagues. Our findings showed that subcomponents of working memory, such as the phonological loop and visuo-spatial sketch pad, were spared in TGA patients. Specific executive functions that entailed inhibitory control, dual task performance, updating and shifting mechanisms were also found to be normal. However, we found significantly impaired performance for the Brown-Peterson test, and that TGA patients were significantly impaired in the recollection of their episodic memories. They also made reduced numbers of 'remember' compared with 'know' judgments in the episodic memory test several days after TGA. On the basis of our findings, it would appear that the episodic memory deficit during TGA is not related to elementary aspects of executive functioning. Our data also highlight the nature of the cognitive mechanisms involved in the Brown-Peterson task, which may well depend on long-term memory (such as the process of semantic encoding). Lastly, the selective deficit in recollective episodic memories observed in TGA may be principally related to medial temporal lobe abnormalities that have been reported in this syndrome. (+info)The dynamic time course of memory recovery in transient global amnesia. (5/30)
AIMS: To investigate the dynamic time course of transient global amnesia (TGA)--that is, the process of recovery and the interindividual variability--by testing four patients during the day of TGA itself (on three occasions) and at follow up (on two occasions). METHODS: A specially designed protocol focusing on semantic (both conceptual and autobiographical knowledge) and episodic (both anterograde and retrograde components) memory. RESULTS: Every patient showed marked impairment of both anterograde and retrograde episodic memory during the acute phase, with a relative preservation of personal and conceptual semantic knowledge. During the following phase, the authors observed similarities and differences among the patients' patterns of recovery. In general, retrograde amnesia recovered before the anterograde amnesia and anterograde episodic memory was recovered gradually in every case. In contrast, shrinkage of retrograde amnesia was more heterogeneous. In two of the patients, this shrinkage followed a chronological gradient and the most remote events were recovered first. In the two other patients, it depended more on the strength of the trace, and there was no temporal gradient. For the latter, an executive deficit could account for difficulties in accessing both conceptual knowledge and autobiographical memories. CONCLUSIONS: This profile of recovery suggests a "neocortical to medial temporal" process in every case, and the possibility of an additional frontal dysfunction in some cases. Hence, the acute phase seems to be characterised by a common episodic impairment. This variability between subjects appears in the recovery phase with two different patterns of impairment. (+info)Internal jugular vein valve incompetence and intracranial venous anatomy in transient global amnesia. (6/30)
BACKGROUND: Recently a causal relation between internal jugular vein valve incompetence (IJVVI) and transient global amnesia (TGA) has been suggested. IJVVI is postulated to provoke a transient mesiotemporal ischaemia by venous congestion. This mechanism requires a patent venous pathway from the affected IJV through the transverse sinus, confluens, straight sinus (SS), vein of Galen into the basal vein of Rosenthal and the internal cerebral veins. OBJECTIVE: To study IJVVI in TGA patients in relation to the intracranial venous anatomy. METHODS: IJVVI was defined if a repeated Valsalva manoeuvre (VM) led to a retrograde jugular flow detected by extracranial duplex ultrasound. Non-contrast venous MR angiography (MRA) was performed to analyse intracranial drainage patterns of the SS in relation to the side of the IJVVI. SS drainage was differentiated into three groups: predominantly right, left, and bilateral drainage. Ultrasound studies were performed in 25 TGA patients and 85 age matched controls. Twenty patients underwent venous MRA. RESULTS: Sixty eight per cent of patients and 33% of controls showed unilateral or bilateral IJVVI (p = 0.0025). In 36% of patients a TGA preceding VM was reported. Drainage pattern of SS and side of IJVVI corresponded in five of eight patients (63%) with VM and four of 12 patients without VM (33%, p = 0.0994). CONCLUSION: Our study confirms the significantly higher prevalence of IJVVI in TGA patients. However, no specific IJVVI related intracranial venous drainage patterns could be found to further support the hypothesis of a direct causal relation between IJVVI and TGA. (+info)What does transient global amnesia really mean? Review of the literature and thorough study of 142 cases. (7/30)
Since the first reports of transient global amnesia (TGA) were published in 1956, several neuropsychological and functional imaging studies have shed light on different aspects of this neurological syndrome. By establishing diagnostic criteria, Hodges and Warlow (1990b) have made it far easier to identify clinical TGA-related features. However, no comprehensive survey has been yet carried out in order to validate their criteria/findings or provide information about previously unknown features. In the present paper, (i) we review the literature published since Hodges and Warlow's study and seek to characterize the demographic and clinical features of TGA more accurately, (ii) we report 142 personal TGA cases, with supplementary information regarding both episodes and patients, such as precipitating events, associated symptoms and personality, and (iii) we suggest the existence of different groups of TGA patients, on the basis of a hierarchical cluster analysis. This revealed that in women, episodes are mainly associated with an emotional precipitating event, a history of anxiety and a pathological personality. In men, they occur more frequently after a physical precipitating event. In younger patients, a history of headaches may constitute an important risk factor. No link was found with vascular risk factors. The relevance of each of the above-mentioned variables is discussed in the light of our classification. An extensive description of cases from both the literature and our patient population allows us to refine the characterization of clinical TGA features. (+info)Selective affection of hippocampal CA-1 neurons in patients with transient global amnesia without long-term sequelae. (8/30)
The aetiology, pathomechanisms and anatomical correlates of transient global amnesia (TGA) still remain obscure. Recently, focal MR-signal diffusion-weighted imaging (DWI) changes in the hippocampus have been described in patients with TGA, but the exact localization, long term outcome and pathophysiological nature of these lesions still remain unknown. The topography and time course of hippocampal DWI lesions in 41 TGA patients was studied using serial 3 T high-resolution MR-imaging and correlated to clinical and neuropsychometric results. Of these, 29 patients showed 36 DWI lesions with corresponding T(2) lesions in the hippocampus within a time window of 48 h after onset. Almost all lesions (94%; 34/36) were selectively found in the CA-1 sector (Sommer sector) of the hippocampal cornu ammonis. Most DWI lesions (8/10) were already detectable in the peri-acute phase <6 h after onset of symptoms. A follow-up study 4-6 months after the episode did not show evidence for residual structural sequelae of these lesions (n = 20/20). A venous MR angiography of the intracranial dural sinus showed an asymmetric venous drainage in 21/24 (88%) patients. In 11/16 (69%) patients with unilateral lesions, the asymmetry corresponded to the side of the DWI lesion. Significant episodic verbal memory deficits in the acute phase (n = 14/18) were associated with lesions of the dominant hemisphere while impairment of visuospatial memory was associated with lesions of the non-dominant hemisphere. Persistent neuropsychological sequelae were not detected 4-6 months after the episode (n = 16). This is the first prospective study combining high-resolution imaging and neuropsychometry analysing the detailed functional anatomy and outcome of hippocampal DWI/T(2) lesions in TGA supporting the view the TGA being a benign transient disorder. The TGA can be considered a model for a focal transient perturbation of memory circuits in the temporo-mesial region. (+info)Transient global amnesia is a dramatic, sudden, temporary, near-total loss of short-term memory. Various causes have been ... Szabo, K (2014). "Transient global amnesia". Frontiers of neurology and neuroscience. 34: 143-9. doi:10.1159/000356431. PMID ... Lewis SL (Aug 1998). "Aetiology of transient global amnesia". Lancet. 352 (9125): 397-9. doi:10.1016/S0140-6736(98)01442-1. ... "Detection of intracranial venous reflux in patients of transient global amnesia". Neurology. 66 (12): 1873-77. doi:10.1212/01. ...
Akkawi NM, Agosti C, Rozzini L, Anzola GP, Padovani A (2001). "Transient global amnesia and venous flow patterns" (PDF). The ... Lewis, S (1998). "Aetiology of transient global amnesia". The Lancet. 352 (9125): 397-9. doi:10.1016/S0140-6736(98)01442-1. ... Sander, Kerstin; Sander, Dirk (2005). "New insights into transient global amnesia: recent imaging and clinical findings". The ... "Transient global amnesia. Case-control study of 24 cases". Revista de neurologia. 24 (129): 554-7. PMID 8681172. Nedelmann; ...
While on Lipitor, Graveline developed transient global amnesia and could not recognize his family. He slowly recovered after ... NASA physicians then prescribed half the dose, but the amnesia returned. Graveline wrote four books in support of his statin ...
Transient global amnesia is a very rare disorder and not much is known about it. Patients acutely develop a selective disorder ... Amnesia can be a result of disconnection of the mammillary bodies from the Papez circuit. The fornix is a bundle of nerve ... As a result of these adverse effects on episodic memory, damage to the Papez circuit can not only indicate or predict amnesia ... Beglinger, L. J., Haut, M. W., & Parsons, M. W. (2006). The role of the Mammillary bodies in memory: A case of amnesia ...
Transient global amnesia[edit]. Transient global amnesia is a dramatic, sudden, temporary, near-total loss of short-term memory ... Szabo, K (2014). "Transient global amnesia.". Frontiers of neurology and neuroscience. 34: 143-9. PMID 24777137. doi:10.1159/ ... Lewis SL (Aug 1998). "Aetiology of transient global amnesia". Lancet. 352 (9125): 397-9. PMID 9717945. doi:10.1016/S0140-6736( ... "Detection of intracranial venous reflux in patients of transient global amnesia". Neurology. 66 (12): 1873-77. PMID 16801653. ...
Neuro psychological and inspect scan findings during and after transient global amnesia: Evidence for the differential ... who suffered dense retrograde amnesia leaving her unable to recall any events that occurred prior to the development of amnesia ... However, her memory for general facts about her life during the period of amnesia remained intact. This suggests that a ... Evidence also exists that shows how patients with severe amnesia can have accurate and detailed semantic knowledge of what they ...
Transient global amnesia (438) Late effects of cerebrovascular disease (438.0) Cognitive deficits (438.1) Speech and language ... Transient ischemic attack, unspec. (436) Acute but ill-defined cerebrovascular disease (437) Other and ill-defined ... Transient cerebral ischemia (435.0) Basilar artery syndrome (435.1) Vertebral artery syndrome (435.2) Subclavian steal syndrome ...
Transient global amnesia (G45.8) Other transient cerebral ischaemic attacks and related syndromes (G45.9) Transient cerebral ... Transient cerebral ischaemic attacks and related syndromes (G45.0) Vertebrobasilar artery syndrome (G45.1) Carotid artery ...
... syndrome Transcobalamin II deficiency Transient erythroblastopenia of childhood Transient global amnesia Transient neonatal ...
... and transient global amnesia would leave no traces at post-mortem in any case. Evidence to the inquest showed that the driver ... the official inquiry raised the possibility that the driver had been affected by a condition such as transient global amnesia, ...
... amnesia, retrograde MeSH C23.888.592.604.529.100.800 --- amnesia, transient global MeSH C23.888.592.604.529.400 --- korsakoff ... amnesia MeSH C23.888.592.604.529.100.075 --- amnesia, anterograde MeSH C23.888.592.604.529.100.150 --- ...
... explaining that he had been diagnosed with transient global amnesia (TGA), a type of amnesia involving the sudden, temporary ...
... amnesia, anterograde MeSH F01.700.625.100.150 --- amnesia, retrograde MeSH F01.700.625.100.800 --- amnesia, transient global ...
Early Diagnosis and Treatment of Dementia Presenting as Transient Global Amnesia, Erno S. Daniel, Journal of Clinical ...
... amnesia, retrograde MeSH C10.597.606.525.100.800 --- amnesia, transient global MeSH C10.597.606.525.400 --- korsakoff syndrome ... amnesia, transient global MeSH C10.228.140.068 --- auditory diseases, central MeSH C10.228.140.068.094 --- auditory perceptual ... amnesia MeSH C10.597.606.525.100.075 --- amnesia, anterograde MeSH C10.597.606.525.100.150 --- ... transient MeSH C10.228.140.300.451.400 --- hypoxia, brain MeSH C10.228.140.300.510 --- intracranial arterial diseases MeSH ...
... and anterograde amnesia, but does not affect transient global amnesia.[citation needed] Side effects due to rapid decrease in ...
... amnesia, anterograde MeSH F03.087.200.150 --- amnesia, retrograde MeSH F03.087.200.800 --- amnesia, transient global MeSH ... amnesia MeSH F03.087.200.125 --- alcohol amnestic disorder MeSH F03.087.200.125.500 --- korsakoff syndrome MeSH F03.087.200.137 ...
Individuals with transient global amnesia that have difficulty forming new memories and/or remembering old events may sometimes ... Damage to the hippocampus and surrounding area can cause anterograde amnesia, the inability to form new memories. This implies ...
... drug-induced Amnesia, lacunar Amnesia, psychogenic Amnesia, retrograde Amnesia, source Amnesia, transient global Amyotrophic ... Amelogenesis imperfecta nephrocalcinosis Ameloonychohypohidrotic syndrome Amenorrhea American trypanosomiasis Amnesia Amnesia, ... familial Anterograde amnesia Anthrax Anti-factor VIII autoimmunization Antigen-peptide-transporter 2 deficiency Anti-HLA ... anterograde Amnesia, childhood Amnesia, dissociative Amnesia, ...
Transient global amnesia is a well-described medical and clinical phenomenon. This form of amnesia is distinct in that ... There are two main types of amnesia: retrograde amnesia and anterograde amnesia. Retrograde amnesia is the inability to ... Lacunar amnesia is the loss of memory about one specific event. Childhood amnesia (also known as infantile amnesia) is the ... Transient epileptic amnesia is a rare and unrecognized form of temporal lobe epilepsy, which is typically an episodic isolated ...
Diagnoses of psychogenic amnesia have dropped since agreement in the field of transient global amnesia, suggesting some over ... The most commonly cited examples of global-transient psychogenic amnesia are 'fugue states', of which there is a sudden ... Past literature has suggested psychogenic amnesia can be 'situation-specific' or 'global-transient', the former referring to ... Psychogenic amnesia is supposed to differ from organic amnesia in a number of ways; one being that unlike organic amnesia, ...
RA can also be an inherent aspect of other forms of amnesia, namely transient global amnesia (TGA). TGA is the sudden onset of ... Fisher, C. M. (1982). Transient global amnesia, Archives of Neurology, 39(10), 605-608. Guillery-Girard, B., Desgranges, B., ... Generally, this is a more severe type of amnesia known as global or generalized amnesia. However, memory loss can also be ... Amnesia Anterograde amnesia Dissociative amnesia Jab Tak Hai Jaan - Bollywood Movie showing RA briefly on a person Samantha Who ...
"Transient global amnesia: current perspectives". Neuropsychiatric Disease and Treatment. Dove Medical Press Ltd. 13: 2691-2703 ... Loss of memory is known as amnesia. Amnesia can result from extensive damage to: (a) the regions of the medial temporal lobe, ... Memory loss is usually described as forgetfulness or amnesia.[15][16][17][18][19][20] ... Importantly, infantile amnesia is not unique to humans, and preclinical research (using rodent models) provides insight into ...
The Valsalva maneuver has been associated with transient global amnesia.[15][16][17][18][19] ... Akkawi NM, Agosti C, Rozzini L, Anzola GP, Padovani A (2001). "Transient global amnesia and venous flow patterns". The Lancet. ... Lewis, S (1998). "Aetiology of transient global amnesia". The Lancet. 352 (9125): 397-9. doi:10.1016/S0140-6736(98)01442-1. ... Sander, Kerstin; Sander, Dirk (2005). "New insights into transient global amnesia: recent imaging and clinical findings". The ...
Amnesia Dissociative amnesia Logan, W; Sherman, D (1983). "Transient global amnesia". Stroke. 14 (6): 1005-7. doi:10.1161/01. ... Bauer, G.; Benke, T; Unterberger, I; Schmutzhard, E; Trinka, E (2005). "Transient global amnesia or transient epileptic amnesia ... "Transient global amnesia". Mayo Clinic. Retrieved 19 October 2009. "Sex Can Trigger Short-Term Amnesia". AOL News. Archived ... Zorzon, Marino; Antonutti, L; Masè, G; Biasutti, E; Vitrani, B; Cazzato, G (1995). "Transient Global Amnesia and Transient ...
Transient global amnesia. *زبان‌پریشی. *سکته مغزی *MCA. *ACA. *PCA. *Foville's. *Millard-Gubler ...
Is this a genetic problem?. Ask a Doctor about diagnosis, treatment and medication for Transient global amnesia, Ask a Genetics ... Suffered transient global amnesia and got bleeding disorder. Feeling tired. ... Suffered transient global amnesia and got bleeding disorder. Feeling tired. Is this a genetic problem?. ... Then she suffered Transient Global Amnesia. Then she began the bleeding problem, which is excsessive, hard to stop bleeding. ...
Amnesia Dissociative amnesia Logan, W; Sherman, D (1983). "Transient global amnesia". Stroke. 14 (6): 1005-7. doi:10.1161/01. ... Bauer, G.; Benke, T; Unterberger, I; Schmutzhard, E; Trinka, E (2005). "Transient global amnesia or transient epileptic amnesia ... "Transient global amnesia". Mayo Clinic. Retrieved 19 October 2009. "Sex Can Trigger Short-Term Amnesia". AOL News. Archived ... Zorzon, Marino; Antonutti, L; Masè, G; Biasutti, E; Vitrani, B; Cazzato, G (1995). "Transient Global Amnesia and Transient ...
Neuropsychological testing in the acute phase showed a pattern of anterograde and retrograde amnesia, whereas memory was within ... A patient who suffered a transient global amnesia (TGA) attack underwent regional cerebral blood flow (rCBF) SPECT imaging and ... A patient who suffered a transient global amnesia (TGA) attack underwent regional cerebral blood flow (rCBF) SPECT imaging and ... Recovery from Transient Global Amnesia Following Restoration of Hippocampal and Fronto-Cingulate Perfusion. ...
Few incident stroke/transient ischemic attacks (TIA) (1 event among the cases and 4 in controls) or subsequent seizures ... Few incident stroke/transient ischemic attacks (TIA) (1 event among the cases and 4 in controls) or subsequent seizures ... Transient global amnesia (TGA) is a temporary amnestic syndrome characterized by lack of other focal neurological deficits. ... Transient global amnesia (TGA) is a temporary amnestic syndrome characterized by lack of other focal neurological deficits. ...
Transient global amnesia (TGA) is a self-limited disease characterized by isolated amnesia, which resolves within 24 h. In ... L. R. Caplan, "Transient global amnesia," in Handbook of Clinical Neurology, P. J. Vincent, G. W. Bruyn, and H. L. Klawans, Eds ... Transient Global Amnesia with Reversible White Matter Lesions: A Variant of Posterior Reversible Encephalopathy Syndrome?. ... M. Nedelmann and M. Kaps, "Elevated blood pressure as a prominent finding in patients with transient global amnesia," European ...
From Lynn Lemmon, Dunedin, Florida My husband recently had his second episode of Transient Global Amnesia. All neuro tests are ... What are normal symptoms after Transient Global Amnesia?. As a feature of CNNhealth.com, our team of expert doctors will answer ... I recently ended up in the hospital with what they suspect is a transient global amnesia. It occurred right after I had put my ... I was brought to the emergency room and diagnosed with Transient Global Amnesia and told that it is so rare that I will never ...
Transient Global Amnesia at The Memory Disorders Center at Johns Hopkins. ... amnesia, Alzheimers, HIV Dementia, Vascular Dementia, Normal pressure hydrocephalus, Korsakoffs Syndrome, ...
Transient global amnesia is a clinical syndrome characterized by the sudden onset of anterograde amnesia, accompanied by ... Critical clinical distinctions, such as between transient global amnesia and other forms of transient amnesic episodes, as well ... A Case of Transient Global Amnesia: A Review and How It May Shed Further Insight into the Neurobiology of Delusions.. Spiegel ... Neuroimaging after an acutetransient global amnesia event often shows transient perturbation of specific hippocampal circuits ...
Transient global amnesia associated with bilateral restricted diffusion in the lateral hippocampus ... Transient global amnesia associated with bilateral restricted diffusion in the lateral hippocampus ...
Transient global amnesia: an amnestic TIA. In: Markowitsch HJ, ed. Transient global amnesia and related disorders. Toronto: ... Transient global amnesia (TGA) is a benign condition characterised by sudden anterograde amnesia of less than 24 hours without ... and transient global amnesia (TGA) has been suggested. IJVVI is postulated to provoke a transient mesiotemporal ischaemia by ... Akkawi NM, Agosti C, Anzola GP, et al. Transient global amnesia: a clinical and sonographic study. Eur Neurol 2003;49:67-71. ...
2000) Transient global amnesia: a review emphasizing pathogenic aspects. Acta Neurol Scand 102:275-83. ... 2004) Detection of delayed focal MR changes in the lateral hippocampus in transient global amnesia. Neurology 62:2165-70. ... 1990) Syndromes of transient global amnesia: towards a classification. A study of 153 cases. J Neurol Neurosurg Psychiatry 53: ... Transient global amnesia associated with the infusion of DMSO-cryopreserved autologous peripheral blood stem cells ...
... an episode of transient global amnesia can be a terrifying ordeal. Despite being attributed at points to transient ischemia, ... the true cause and pathology of transient global amnesia (TGA) is as of yet unknown. Mangla, et al conducted this study to ... Transient global amnesia and the risk of stroke. Stroke 2014;45:389-393. Because of its symptomatic similarity to ischemic ... Stroke After an Episode of Transient Global Amnesia Is Rare. Emergency Medicine Stroke After an Episode of Transient Global ...
Diagnostic Criteria for Transient Global Amnesia (TGA). Update on Friday December 20th, 2019. by Guillermo Firman ... Diagnostic Criteria for Transient Global Amnesia (TGA). In order to diagnose TGA the patient must satisfy the following ... Transient global amnesia (TGA) is a benign, temporary loss of anterograde memory with sparing of immediate recall and remote ... Harrison M, Williams M. The diagnosis and management of transient global amnesia in the emergency department. Emerg Med J. 2007 ...
Social Impact of Transient Global Amnesia ( TGA ) Most of you that have read my books and articles on this site are familiar ... with the term statin associated transient global amnesia (TGA), one of the commonly reported cognitive deficits induced by ... If the retrograde amnesia extends back before the victim took their special training in operating an 18-wheeler truck, aircraft ... to communicate because they cannot remember what the other person has just said and have complete amnesia of their amnesia. ...
Study of Transient Global Amnesia for Better Detection of MRI Abnormalities. European Journal of Neurology. ... A Multicenter Study of Transient Global Amnesia for the Better Detection of Magnetic Resonance Imaging Abnormalities. Eur. J. ...
Transient Global. Diagnostic. Amnesia, Transient Global Doctors. Amnesia, Transient Global Explained. Amnesia, Transient Global ... Amnesia, Transient Global. Find a Doctor Amnesia, Transient Global. Ask a Doctor Online. Amnesia, Transient Global. Find a ... Amnesia, Transient Global Doctors and Specialists. Find List of Medicine. ... Amnesia, Transient Global Doctor. The modern practice of medicine occurs at the many interfaces between the art of healing and ...
The term transient global amnesia (TGA) refers to a complete memory loss for a short duration of time (often 1-8 hrs); lasting ... While transient ischemic attacks (TIA) are a warning sign of an impending stroke, TGAs DO NOT herald a stroke. Generally, TGA ... The precise cause of TGA is not known, however some studies using brain imaging techniques suggests that there may be transient ... Clinical presentation: Sudden loss of memory, in a fully conscious individual, that is transient and recovers fully ...
Maybe some amnesia for past events (retrograde) No loss of awareness of environment Able to perform complex tasks (drive, cook ... Transient Global Amnesia. Acute-onset inability to form new memories (cause unknown). * Age ,50, usually older. ...
Transient global amnesia[edit]. Transient global amnesia is a dramatic, sudden, temporary, near-total loss of short-term memory ... Szabo, K (2014). "Transient global amnesia.". Frontiers of neurology and neuroscience. 34: 143-9. PMID 24777137. doi:10.1159/ ... Lewis SL (Aug 1998). "Aetiology of transient global amnesia". Lancet. 352 (9125): 397-9. PMID 9717945. doi:10.1016/S0140-6736( ... "Detection of intracranial venous reflux in patients of transient global amnesia". Neurology. 66 (12): 1873-77. PMID 16801653. ...
Transient global amnesia is a sudden, temporary episode of memory loss that cant be attributed to a more common neurological ... Definition of Transient global amnesia. Transient global amnesia is a sudden, temporary episode of memory loss that cant be ... Symptoms of Transient global amnesia. Transient global amnesia is identified by its main symptom, which is the inability to ... Complications of Transient global amnesia. Transient global amnesia has no direct complications, but it can cause emotional ...
Transient global amnesia (TGA), first described in 1956, is a clinical syndrome characterized by sudden onset of marked ... Transient global amnesia: current perspectives. Neuropsychiatr Dis Treat. 2017;13:2691-2703. [View Abstract on OvidMedline] ... Reversible cerebral vasoconstriction syndrome presenting with transient global amnesia. Intern Med. 2017;56(12):1569-1573. [ ...
Transient global amnesia (TGA) is a temporary loss of short-term memory without other signs of impaired cognition and with ... Transient global amnesia (TGA) is a temporary loss of short-term memory without other signs of impaired cognition and with ... Transient global amnesia: seven years of experience with diffusion-weighted imaging in an emergency department. Eur. Neurol. ... Transient global amnesia: diffusion-weighted imaging lesions and cerebrovascular disease. Stroke. 2008;39 (8): 2219-25. doi: ...
Transient global amnesia, from Wikipedia, the free encyclopedia.. Transient Global Amnesia. eMedicine.. Sex, then amnesia...and ... now list rare reports of transient global amnesia on their labels.. What is transient global amnesia (TGA)?. TGA is a brief ... There is no proof that the erectile dysfunction drugs actually cause transient global amnesia, which can happen for various ... Cialis, Viagra Labels to Note Amnesia. WebMD.. Hodges JR, Warlow CP Syndromes of transient amnesia: towards a classification; a ...
Transient global amnesia Risk Factors. The most apparent risk factors for this disorder are:. Age. Those aged 50 and above are ... Transient global amnesia Incidence. The annual incidence of TGA has been estimated to vary between 23 and 32 cases in every ... Transient global amnesia Causes. The underlying cause of TGA is not known as yet. According to medical researchers, there is ... Transient global amnesia Treatment. The condition does not require any medical treatment. It tends to disappear on its own and ...
Ropper Transient global amnesia (TGA) is a great curiosity in medicine, the underlying pathophysiology of which remains under ... Transient global amnesia during a professional cello concertPublication year: 2011 Source: Journal of Clinical Neuroscience, In ... Transient global amnesia during a professional cello concert. Publication year: 2011. Source: Journal of Clinical Neuroscience ... Transient global amnesia (TGA) is a great curiosity in medicine, the underlying pathophysiology of which remains under debate. ...
RetrogradeSymptomsType of amnesiaLess than 24 hoursCase of Transient GlobalEpisode of transient globalHippocampusTemporaryTypes of AmnesiaIschemic attacksDiagnosisCerebralDiagnosing amnesia and its causeSeizureTraveler's AmnesiaForgetfulnessOften transientNeurologicalPrognosisCerebrovascular diseasePsychogenic amnesiaHippocampalStrokeEpisodesDiseasesPost-traumatSyndrome characterizedTraumaComplete amnesiaVenousMemoriesRecallBrainDeficitDissociativePatientIschemiaTraumaticDoctorsClassificationClinical syndromeLesionsHeadache
- If the retrograde amnesia extends back before the victim took their special training in operating an 18-wheeler truck, aircraft or heavy equipment, this unfortunate person with a TGA may wake up at totally unfamiliar controls. (spacedoc.com)
- During the TGA episode, the person may forget memories from the recent past (retrograde amnesia). (cdc.gov)
- In severe attacks, a person is completely disoriented and may experience retrograde amnesia that extends back several years. (thefreedictionary.com)
- Retrograde amnesia is a form of amnesia where someone will be unable to recall events that occurred before the onset of amnesia. (wikidoc.org)
- Retrograde amnesia is caused by trauma that results in brain injury. (wikidoc.org)
- Critical details of the physical changes in the brain that cause retrograde amnesia are still unknown. (wikidoc.org)
- Retrograde amnesia is often temporally graded, meaning that remote memories are more easily accessible than events occurring just prior to the trauma ( Ribot's Law ). (wikidoc.org)
- For instance the victim, a concert pianist before, may still remember what a piano is after the onset of retrograde amnesia, but may forget how to play. (wikidoc.org)
- This type of amnesia is called retrograde amnesia. (encyclopedia.com)
- Retrograde amnesia is the inability to recall some memory or memories of the past, beyond ordinary forgetfulness. (bionity.com)
- 3. Retrograde Amnesia: Retrograde amnesia is the inability to remember events preceding a trauma, but recall of events afterwards is possible. (scribd.com)
- What are normal symptoms after Transient Global Amnesia? (cnn.com)
- Along with these signs and symptoms, a common feature of transient global amnesia includes repetitive questioning, usually of the same question - for example, "What am I doing here? (pharmacypedia.org)
- A few minutes after completion of the procedure, the patient developed symptoms suggestive for transient global amnesia. (ovid.com)
- What're the symptoms of amnesia? (health-cares.net)
- Only 3% of people who experience transient global amnesia have symptoms that recur within a year. (encyclopedia.com)
- This type of amnesia has no consistently identifiable cause, but researchers have suggested that migraines or transient ischemic attacks may be the trigger. (thefreedictionary.com)
- Some say this type of amnesia could be linked to language development or the fact that some areas of the brain linked to memory were not fully mature. (health-cares.net)
- This global type of amnesia is more common in middle-aged to elderly people, particularly males, and usually lasts less than 24 hours. (bionity.com)
- The sufferer will not be able to remember anything that occurs after the onset of this type of amnesia for more than a brief period following the event. (bionity.com)
- This type of amnesia is called functional, or psychogenic, amnesia. (chicagotribune.com)
- This type of amnesia is temporary and may be triggered by physical or emotional stress. (chicagotribune.com)
- TGA is a brief episode amnesia lasting less than 24 hours , without causing other problems. (blogspot.com)
- A Case of Transient Global Amnesia: A Review and How It May Shed Further Insight into the Neurobiology of Delusions. (nih.gov)
- 1 - 4 We report the first MRI documented case of transient global amnesia (TGA) that occurred in the setting of DMSO-cryopreserved APBSC infusion for a relapsing lymphoma. (haematologica.org)
- Amnesia may also be spontaneous, in the case of transient global amnesia . (bionity.com)
- My husband recently had his second episode of Transient Global Amnesia. (cnn.com)
- Because of its symptomatic similarity to ischemic stroke, an episode of transient global amnesia can be a terrifying ordeal. (freecme.com)
- During an episode of transient global amnesia, your recall of recent events simply vanishes, so you can't remember where you are or how you got there. (pharmacypedia.org)
- Detection of delayed focal MR changes in the lateral hippocampus in transient global amnesia. (radiopaedia.org)
- Transient global amnesia (TGA) is a neurological disorder whose key defining characteristic is a temporary but almost total disruption of short-term memory with a range of problems accessing older memories. (wikipedia.org)
- Transient global amnesia (TGA) is a temporary amnestic syndrome characterized by lack of other focal neurological deficits. (frontiersin.org)
- As its name suggests, TGA episode is sudden, transient (temporary) memory loss. (cnn.com)
- Transient global amnesia is a sudden, temporary episode of memory loss that can't be attributed to a more common neurological condition, such as epilepsy or stroke. (pharmacypedia.org)
- Transient global amnesia (TGA) is a temporary loss of short-term memory without other signs of impaired cognition and with absent focal neurological signs. (radiopaedia.org)
- Transient global amnesia (TGA) refers to an abrupt, temporary loss of memory that cannot be associated to more common neurological disorders such as stroke or epilepsy. (primehealthchannel.com)
- I am a 61-year-old female who has had 2 episodes of temporary amnesia. (medhelp.org)
- Transient global amnesia is not as grave as it sounds as it is a sudden but temporary episode of amn. (home-remedies-for-you.com)
- With respect to embolic and hemodynamic causes, this transient monocular visual loss ultimately occurs due to a temporary reduction in retinal artery , ophthalmic artery , or ciliary artery blood flow, leading to a decrease in retinal circulation which, in turn, causes retinal hypoxia. (thefullwiki.org)
- 1. Transient Global Amnesia: Transient global amnesia is a rare, temporary, complete loss of all memory. (scribd.com)
- What types of amnesia are there? (health-cares.net)
- Few incident stroke/transient ischemic attacks (TIA) (one event among the cases and four in controls) or subsequent seizures occurred in either group. (frontiersin.org)
- While transient ischemic attacks (TIA) are a warning sign of an impending stroke, TGAs DO NOT herald a stroke. (educatehealth.ca)
- citation needed] A differential diagnosis should include: Thrombosis of the basilar artery Cardioembolic stroke Complex partial seizures Frontal lobe epilepsy Lacunar syndromes Migraine variants Posterior cerebral artery stroke Syncope and related paroxysmal spells Temporal lobe epilepsy If the event lasts less than one hour, transient epileptic amnesia (TEA) might be implicated. (wikipedia.org)
- Harrison M, Williams M. The diagnosis and management of transient global amnesia in the emergency department. (medicalcriteria.com)
- Information about transient global amnesia including diagnostic criteria, clinical features, precipitating factors, incidence, differential diagnosis and further reading. (healthysense.com)
- They gave me the diagnosis of transient global amnesia but the intern actually said to me they had no idea why this happened. (medhelp.org)
- A patient who suffered a transient global amnesia (TGA) attack underwent regional cerebral blood flow (rCBF) SPECT imaging and neuropsychological testing in the acute phase, after one month and after one year. (hindawi.com)
- Reversible cerebral vasoconstriction syndrome presenting with transient global amnesia. (5minuteconsult.com)
- Transient global amnesia is now considered a very rare complication of cerebral angiography. (ovid.com)
- This case report documents one of the few reported cases of cerebral angiography-related transient global amnesia associated with magnetic resonance imaging (MRI) evidence of unilateral hippocampal ischemia, most probably as a consequence of a transient reduction in regional hippocampal blood flow. (ovid.com)
- The precise mechanism of transient global amnesia related to cerebral angiography is still unclear, and further studies aimed to determine the definite pathophysiology of this syndrome and consequently to establish specific preventive measures are needed. (ovid.com)
- Objectives: This study investigated alterations in regional cerebral blood flow (rCBF) in patients with transient global amnesia (TGA) using statistical parametric mapping 99 (SPM99). (mst.edu)
- Cerebral venous reflux is found frequently in transient global amnesia (TGA) patients. (elsevier.com)
- In diagnosing amnesia and its cause, doctors look at several factors. (thefreedictionary.com)
- Despite being attributed at points to transient ischemia, epileptic seizure, and migraine, the true cause and pathology of transient global amnesia (TGA) is as of yet unknown. (freecme.com)
- The authors compared the rate of stroke after an episode of TGA to the rates of stroke following migraine, epileptic seizure, and transient ischemic attack, and found that, after adjustment for demographic characteristics and stroke risk factors, TGA was not significantly associated with stroke risk when compared with migraine, TIA, or epileptic seizure. (freecme.com)
- In fact, sudden amnesia is much more likely to be caused by a stroke or a seizure than by transient global amnesia. (pharmacypedia.org)
- Sudden amnesia is in fact, much more likely to result from a seizure or stroke than due to TGA. (primehealthchannel.com)
- Although medical researchers characterize this side effect as "less common", the benzodiazepine triazolam (Halcion) apparently has the greatest chance of inducing traveler's amnesia, whether taken exactly as directed, varying the dosage (say, when coming off the drug too quickly), drinking alcohol, or not getting enough sleep. (wikidoc.org)
- Memory loss (amnesia) is unusual forgetfulness. (medlineplus.gov)
- Memory loss is usually described as forgetfulness or amnesia . (wikipedia.org)
- Traumatic amnesia is often transient, the duration of the amnesia is related to the degree of injury and may give an indication of the prognosis for recovery of other functions. (health-cares.net)
- Both transient global amnesia (TGA) and posterior reversible encephalopathy syndrome (PRES) are acute neurological disorders that are frequently encountered in emergency and neurological departments. (hindawi.com)
- The episode lasted approximately four hours following which the patient was back to baseline with a normal neurological and mental status examination except that he had a complete amnesia of all the events that occurred during the period spanning from 2 hours preceding the infusion and until the end of his episode. (haematologica.org)
- While very frightening for the patient, transient global amnesia generally has an excellent prognosis for recovery. (thefreedictionary.com)
- Transient global amnesia: diffusion-weighted imaging lesions and cerebrovascular disease. (radiopaedia.org)
- The focus of this article is the assessment and management of medically unexplained ('psychogenic') amnesia, which we classify here as global or situation specific. (cambridge.org)
- Finally, brain and physiological mechanisms potentially associated with psychogenic amnesia are discussed. (cambridge.org)
- Neuroimaging after an acutetransient global amnesia event often shows transient perturbation of specific hippocampal circuits that are involved in memory processing. (nih.gov)
- Transient global amnesia and the risk of stroke. (freecme.com)
- Transient global amnesia is an exception, but it can be hard to let go of the fear that you have a tumor or had a stroke. (pharmacypedia.org)
- Importantly, transient global amnesia is not a risk factor for stroke. (pharmacypedia.org)
- A transient ischemic attack , sometimes called 'a small stroke,' occurs when a blockage in an artery temporarily blocks off blood supply to part of the brain. (thefreedictionary.com)
- Critical clinical distinctions, such as between transient global amnesia and other forms of transient amnesic episodes, as well as important clues to the underlying pathophysiologies are herein reviewed. (nih.gov)
- Transient global amnesia (TGA) is characterized by episodes during which the patient is unable to create new memories or learn new information, and sometimes is unable to recall past memories. (encyclopedia.com)
- The Merck Manual defines it as "one or more episodes of amnesia in which the inability to recall some or all of one's past and either the loss of one's identity or the formation of a new identity occur with sudden, unexpected, purposeful travel away from home" . (bionity.com)
- Other lucky ones have witnessed episodes of Transient Global Amnesia in the first few weeks. (angelfire.com)
- Owen D, Paranandi B, Sivakumar R, Seevaratnam M. Classical diseases revisited: transient global amnesia. (medicalcriteria.com)
- Diseases associated with PPM1E include Osteoblastoma and Transient Global Amnesia . (genecards.org)
- Hysterical post-traumatic amnesia is an example of this. (bionity.com)
- Transient Global Amnesia (TGA) is a well defined pure amnesic clinical syndrome characterized by acute loss of memory in middle aged people. (cdc.gov)
- This form of amnesia follows brain trauma and is characterized by the inability to remember new information. (thefreedictionary.com)
- Psychotherapy can be helpful for amnesia caused by emotional trauma. (health-cares.net)
- Dissociative Amnesia results from a psychological cause as opposed to direct damage to the brain caused by head injury, physical trauma or disease, which is known as organic amnesia. (bionity.com)
- Although one afflicted with TGA has preserved the ability to speak, they are totally unable to communicate because they cannot remember what the other person has just said and have complete amnesia of their amnesia. (spacedoc.com)
- Transient global amnesia is identified by its main symptom, which is the inability to form new memories and to recall the recent past. (pharmacypedia.org)
- Posthypnotic amnesia is where events during hypnosis are forgotten, or where past memories are unable to be recalled. (health-cares.net)
- Once his memories are restored (through medication) he remembers all memories prior to the incident and during the amnesia period. (medhelp.org)
- Other people experience the inability to learn new facts or retain new memories, which is called ante-rograde amnesia. (encyclopedia.com)
- The loss of ability to create new memories after an amnesia event. (mental-health-matters.com)
- Infantile/childhood amnesia refers to a person's inability to recall events from early childhood. (health-cares.net)
- Doctors have diagnosed him with Transient Global Amnesia, but after four months, he still has no recall. (scpr.org)
- The precise cause of TGA is not known, however some studies using brain imaging techniques suggests that there may be transient disruption in blood flow within key memory centres in the brain. (educatehealth.ca)
- People who experience amnesia have been instrumental in helping brain researchers determine how the brain processes memory. (thefreedictionary.com)
- Infections that damage brain tissue, including encephalitis and herpes, can also cause amnesia. (thefreedictionary.com)
- The brain-derived neurotrophic factor (BDNF) Val66Met polymorphism is not significantly correlated to Transient Global Amnesia: preliminary results. (cdc.gov)
- Traumatic amnesia is caused by brain damage from a hard blow to the head, such as in a car accident. (health-cares.net)
- Amnesia is a profound memory loss which is usually caused either by physical injury to the brain or by the ingestion of a toxic substance which affects the brain. (health-cares.net)
- Amnesia is only preventable in so far as brain injury can be prevented or minimized. (health-cares.net)
- What happens in the brain of someone suffering from amnesia? (scpr.org)
- Brain 117: 545-552 Berlit P (2000) Successful prophylaxis of recurrent transient global amnesia with metoprolol. (google.com.au)
- Transient global amnesia is probably caused by an interruption of blood flow to the parts of the brain that are important to memory. (chicagotribune.com)
- On examination, the patient has dense right hemiplegia and hemisensory deficit, global aphasia, and right homonymous hemianopsia. (proprofs.com)
- What is dissociative amnesia? (health-cares.net)
- Dissociative amnesia is characterized by a blocking out of critical personal information, usually of a traumatic or stressful nature. (health-cares.net)
- The patient developed a rare reaction during the infusion manifesting as transient global amnesia. (haematologica.org)
- Profound amnesia after temporal lobectomy: an autoimmune process resembling patient H.M. (springer.com)
- Malignant hypertension can cause ischemia of the optic nerve head leading to transient monocular visual loss. (thefullwiki.org)
- Hysterical (fugue) amnesia is usually triggered by a traumatic event that the person's mind is unable to properly handle. (health-cares.net)
- Traumatic amnesia is generally due to a head injury (fall, knock on the head). (bionity.com)
- Syndromes of transient amnesia: towards a classification. (medicalcriteria.com)
- It is important to consider the etiological, organic, progressive and clinical criteria in amnesia classification. (wikidoc.org)
- The differences are sufficiently meaningful that transient amnesia may be considered a heterogeneous clinical syndrome with multiple etiologies, corresponding mechanisms, and differing prognoses. (wikipedia.org)
- Transient Global Amnesia with Reversible White Matter Lesions: A Variant of Posterior Reversible Encephalopathy Syndrome? (hindawi.com)
- Here we report the case of a 58-year-old woman who presented with isolated amnesia and headache. (hindawi.com)