• Oral lichen planus with ulceration must be followed meticulously to prevent the development of oral squamous cell carcinoma. (medscape.com)
  • It has been hypothesized that oral manifestations are underdiagnosed or misdiagnosed as oral lichen planus, or that environmental effects play a large role in disease expression. (medscape.com)
  • Oral lichen planus (OLP) is a chronic mucocutaneous disorder that presents in a wide range of clinical forms, such as unilateral or bilateral white striations, papules, or plaques on the buccal mucosa, labial mucosa, tongue, and gingiva. (medscape.com)
  • Plaquelike oral lichen planus on the buccal mucosa on the left side. (medscape.com)
  • Ulcerative oral lichen planus on the dorsum of the tongue. (medscape.com)
  • The dense subepithelial mononuclear infiltrate in oral lichen planus is composed of T cells and macrophages, and there are increased numbers of intraepithelial T cells. (medscape.com)
  • Therefore, early in the formation of oral lichen planus lesions, CD8 + T cells may recognize an antigen associated with the major histocompatibility complex (MHC) class I on keratinocytes. (medscape.com)
  • Oral lichen planus lesions contain increased levels of the cytokine tumor necrosis factor (TNF)-alpha. (medscape.com)
  • [ 8 ] T cells in oral lichen planus contain mRNA for TNF and secrete TNF in vitro. (medscape.com)
  • [ 9 ] Serum and salivary TNF levels are elevated in oral lichen planus patients. (medscape.com)
  • Of possible significance, elevated concentrations of interleukin-6 (IL-6) and neopterin in saliva and serum of patients with the erosive-atrophic form of oral lichen planus suggest they may be involved in the etiology of this disease variation. (medscape.com)
  • [ 19 ] Research published in 2015 also suggests that osteopontin, CD44, and survivin may be involved in the pathogenesis of oral lichen planus. (medscape.com)
  • [ 20 ] Additionally, microRNA 4484 (miR-4484) has been found to be significantly up-regulated in the salivary exosomes of patients with oral lichen planus. (medscape.com)
  • The role of autoimmunity in the pathogenesis is supported by many autoimmune features of oral lichen planus, including its chronicity, onset in adults, predilection for females, association with other autoimmune diseases, occasional tissue-type associations, depressed immune-suppressor activity in patients with oral lichen planus, and the presence of autocytotoxic T-cell clones in lichen planus lesions. (medscape.com)
  • Current data suggest that oral lichen planus (OLP) is a T-cell-mediated autoimmune disease in which autocytotoxic CD8 + T cells trigger the apoptosis of oral epithelial cells. (medscape.com)
  • Reported associations between oral lichen planus and systemic diseases may be coincidental, because (1) oral lichen planus is relatively common, (2) oral lichen planus occurs predominantly in older adults, and (3) many drugs used in the treatment of systemic diseases trigger the development of oral lichenoid lesions as an adverse effect. (medscape.com)
  • The Oral Lichen Planus (OLP) is a chronic inflammatory mucocutaneous disease that clinically presents itself in many ways as reticular, atrophic or erythematous and erosive. (bvsalud.org)
  • It may be triggered by diuretics and antimalarials, metal fillings (causing oral lichen planus), stress, and infection. (medscape.com)
  • It recurs often, in about 20% of patients, and it may linger for years, particularly oral lichen planus. (medscape.com)
  • Oral lichen planus (OLP) is a relatively common mucocutaneous disorder, and its causative factors and pathogenesis are not fully understood. (medscape.com)
  • Clathroporina (Clathroporina Lichen) is a genus of Fungi in the family Porinaceae . (eol.org)
  • Nephroma arcticum (Arctic Kidney Lichen) is a species of Fungi in the family Nephromataceae . (eol.org)
  • Lichens cannot be classified as a single entity like plants because they are a composite of fungi (lichen's mycobiont) and green algae or blue-green algae (cyanobacteria) (lichen's photobiont). (nps.gov)
  • Lichens are complex partnerships between fungi, photobionts (an alga, or a cyanobacterium) and other bacteria. (umu.se)
  • Lichens are a symbiotic organism, made up of algae, fungi and yeast. (discoveryplace.org)
  • Although lichen-forming fungi have been suggested to be a rich source of NPs, it is not known how their biosynthetic diversity compares to that of bacteria and non-lichenized fungi. (frontiersin.org)
  • plants, fungi & lichens, flowers, wildflowers images at photo community purple Photo & image by Littleduck ᐅ View and rate this photo free at fotocommunity.de. (fotocommunity.com)
  • Lichens are vibrant, remarkable microcosms structured around fungi. (nybg.org)
  • Lichens are a symbiosis between fungi and algae which can be found almost everywhere. (waag.org)
  • The organism groups formerly known as Cryptogams - mosses, liverworts, lichen and fungi - are particularly diverse in Scandinavia. (lu.se)
  • You will find information about application, prerequisites and the syllabus for the course Mosses, Lichen, Fungi - Biodiversity and Conservation at Lund University's central web pages when the application for autumn 2022 opens. (lu.se)
  • Lichen sclerosus (LS) is a chronic inflammatory dermatosis of unknown cause that most commonly affects the genitalia (vulvar and penile lichen sclerosus), but it can occur at any skin site (extragenital lichen sclerosus). (medscape.com)
  • Outdated terms for this conditions include lichen sclerosus et atrophicus, balanitis xerotica obliterans (glans penis presentation), and kraurosis vulvae (older description of vulvar presentation). (medscape.com)
  • Lichen sclerosus can occur in males or females of any age, but it more commonly affects prepubertal or perimenopausal females or males between puberty and age 60 years. (medscape.com)
  • 5%) with genital lichen sclerosus. (medscape.com)
  • The etiology and pathogenesis of lichen sclerosus (LS) is unknown but may include genetic, infectious, environmental, and hormonal factors. (medscape.com)
  • Several older studies have linked borrelial or other infections with lichen sclerosus, yet most other studies have disputed this, with polymerase chain reaction-based studies showing no increased incidence of borrelial infection. (medscape.com)
  • Women with lichen sclerosus have a higher rate of associated autoimmune disease (odds ratio, 4.3), especially for autoimmune thyroid disease, compared with men. (medscape.com)
  • Local irritation or trauma seems to play a role in some cases of lichen sclerosus, especially in genetically predisposed individuals. (medscape.com)
  • Lichen sclerosus is a condition in which the skin around the vulva has a crinkled or parchment-like appearance. (estronaut.com)
  • A clinical guide by the European Menopause and Andropause Society (EMAS) on lichen sclerosus with summary recommendations has been published in Maturitas. (medindia.net)
  • Vulvar lichen sclerosus (LS) is a chronic inflammatory disease which affects genital labial, perineal and perianal areas, producing significant discomfort and psychological distress. (medindia.net)
  • These and other recommendations presented in the EMAS clinical guide are published in the article: 'EMAS clinical guide: Vulvar lichen sclerosus in peri and postmenopausal women by Faustino R. P rez-L pez, Iuliana Ceausu, Herman Depypere, C. Tamer Erel, Irene Lambrinoudaki, Margaret Rees, Karin Schenck-Gustafsson, Florence Tremollieres, Yvonne T. van der Schouw and Tommaso Simoncini. (medindia.net)
  • What Is Lichen Sclerosus? (abchomeopathy.com)
  • Lichen sclerosus (LIKE-in skler-O-sus) is a chronic inflammatory skin disorder that can affect men, women, or children, but is most common in women. (abchomeopathy.com)
  • While lichen sclerosus appears predominantly in postmenopausal women, this skin condition is also known to develop on the head of the penis in men. (abchomeopathy.com)
  • Occasionally, lichen sclerosus is seen on other parts of the body, especially the upper body, breasts, and upper arms. (abchomeopathy.com)
  • More severe cases of lichen sclerosus produce scarring that may cause the inner lips of the vulva to shrink and disappear, the clitoris to become covered with scar tissue, and the opening of the vagina to narrow. (abchomeopathy.com)
  • Lichen sclerosus of the penis occurs almost exclusively in uncircumcised men (those who have not had the foreskin removed). (abchomeopathy.com)
  • Skin on other areas of the body affected by lichen sclerosus usually does not develop scarring. (abchomeopathy.com)
  • Although definitive data are not available, lichen sclerosus is considered a rare disorder that can develop in people of all ages. (abchomeopathy.com)
  • It is uncommon for women who have vulvar lichen sclerosus to have the disease on other skin surfaces. (abchomeopathy.com)
  • When lichen sclerosus occurs on parts of the body other than the genital area, most often there are no symptoms, other than itching. (abchomeopathy.com)
  • Very mild lichen sclerosus of the genital area often causes no symptoms at all. (abchomeopathy.com)
  • Rarely, lichen sclerosus of the vulva may cause extreme itching that interferes with sleep and daily activities. (abchomeopathy.com)
  • When lichen sclerosus develops around the anus, the discomfort can lead to constipation that is difficult to relieve. (abchomeopathy.com)
  • It is important to note that the signs of lichen sclerosus in children may sometimes be confused with those of sexual abuse. (abchomeopathy.com)
  • Most men with genital lichen sclerosus have not been circumcised. (abchomeopathy.com)
  • Lichen sclerosus has also been shown to appear at sites of previous injury or trauma where the skin has already experienced scarring or damage. (abchomeopathy.com)
  • No, lichen sclerosus is not contagious. (abchomeopathy.com)
  • Because other diseases of the genitalia can look like lichen sclerosus, a biopsy is advised whenever the appearance of the skin is not typical of lichen sclerosus. (abchomeopathy.com)
  • I have been having problems and was worried that my anal cancer was back again but instead was diagnosed by my obgyn with this rare incurable autoimmune disease called lichen sclerosus. (cancer.org)
  • At my 5-year checkup, my gyn-onc found and biopsied a small lesion that he thought might be lichen sclerosus. (cancer.org)
  • Lichens with a leaf-like appearance and structure are termed "foliose," and those with shrubby upright or dangling strands are termed "fruticose. (carnegiemnh.org)
  • Ramalina denticulata, a species of fruticose (shrubby) lichen. (nps.gov)
  • Fruticose lichens are typically the most glamorous and showy. (nps.gov)
  • This shrub-like growth form is the most highly developed and plant-like of the four forms, and some species of fruticose lichen can be difficult to tell apart from plants. (nps.gov)
  • Fruticose lichens often appear to be miniature shrubs. (nps.gov)
  • Even the small limbs are adorned with fruticose lichens. (nih.gov)
  • Three types each of Crustose, Foliose, and Fruticose lichens are featured in the 8˝ x 12˝ display. (forestry-suppliers.com)
  • Some sensitive lichen species develop structural changes in response to air pollution including reduced photosynthesis and bleaching. (nps.gov)
  • Hence the species of lichens present in a location and the concentration of pollutants measured in those lichens can tell us a lot about air quality. (nps.gov)
  • Species were recorded and samples of the pollution-tolerant lichen Flavoparmelia caperatawere taken at each site. (nps.gov)
  • Forty-five species of bark-inhabiting lichens were identified during the NCR inventory. (nps.gov)
  • NCR's bark-inhabiting lichen communities are dominated by nitrogen-loving, pollution-tolerant species. (nps.gov)
  • Lichen communities in urban parks closest to Washington, DC are lowest in species diversity and coverage, and have no pollution sensitive species. (nps.gov)
  • Lichens in Prince William Forest Park are consistently higher in species richness, highest in coverage of pollution-sensitive species, and lower in element concentration than those from other parks. (nps.gov)
  • Additionally, present-day lichen communities are far less diverse and contain fewer sensitive species than communities that existed at the same sites in the past century. (nps.gov)
  • For example, on Plummers Island, the list of lichens once collected includes many pollution-sensitive species that are no longer found in the mid-Atlantic region. (nps.gov)
  • Lichens are found on every continent and estimates of their global diversity range from 13,000 to more than 17,000 species. (carnegiemnh.org)
  • The white patches visible on the cypress trees are not part of the bark, but a common species of crustose lichen. (nps.gov)
  • The colorful patches visible on the roots of the red mangrove consist of several different species of crustose lichen. (nps.gov)
  • The bright green patch on the cypress trunk consists of Chrysothrix candelaris, a species of crustose lichen. (nps.gov)
  • Parmotrema praesorediosum, a species of foliose (leafy) lichen. (nps.gov)
  • A Field Guide to California Lichens features stunning new photographs of some 500 lichen species by award-winning nature photographer Stephen Sharnoff. (yale.edu)
  • Older learners can utilize the iNaturalist app to identify their lichen specimen and investigate similar species. (discoveryplace.org)
  • Our locality has a high diversity of lichen species in a array of beautiful forms. (montananaturalist.org)
  • Learn about the ecology and biology of lichens as you become comfortable identifying common species. (montananaturalist.org)
  • There are five species of lichens in the monument. (us-parks.com)
  • Egg Yolk Lichen (Candelariella rosulans) in the Candelariaceae family, can be a bit variable in appearance, ranging from rosulate to lobate to squamulose but almost always distinguishable from other Candelariella species by its thick, convex thallus and broad spores. (conps.org)
  • The aim of this study was to evaluate the effect of high light on antioxidants content in different lichen species. (muni.cz)
  • Several lichen species were collected in Norway (Peltigera canina, Lobaria pulmonaria, Lobaria scrobiculara) and in Czech Republic (Hypogymnia physodes, Lasallia pustulata). (muni.cz)
  • One of the ways in which lichen species differ, is their response to ammonia. (waag.org)
  • A few participants had prior experience with the method, and for some of them, it was the first encounter with lichens as a species. (waag.org)
  • While some stayed loyal to the workshop question and mapped nitrogen pollution all over the park, others took a step back from the nitrogen question and explored the diversity of lichen species on different tree species. (waag.org)
  • The aim of homeopathy is not only to treat Lichen planus but to address its underlying cause and individual susceptibility. (hpathy.com)
  • As far as therapeutic medication is concerned, several remedies are available to treat Lichen planus that can be selected on the basis of cause, sensations and modalities of the complaints. (hpathy.com)
  • In the North Employee Parking Lot, a small ecosystem is developing on the side of a Cyprus tree, where mosses have already joined the lichen. (nih.gov)
  • Mosses seem to have tiny leaves and grow in wet dark areas while lichens could make disc shapes on stones and grounds. (naldzgraphics.net)
  • Lichens appear grey or white while mosses are commonly green. (naldzgraphics.net)
  • The pollution-sensitive lichen Usnea ceratina. (nps.gov)
  • NEWS A unique long-term study performed by researchers at Umeå University shows that the pendent lichen Usnea longissima decreases with 42 percent over 37 years in Skuleskogen National Park, located in High Coast UNESCO World Heritage site. (umu.se)
  • Usnea longissima (Methuselah's beard lichen) was probably the original for 'tinsel' on Christmas trees and may reach a length of several meters. (umu.se)
  • Per-Anders Esseen quantifies the abundance of Usnea longissima on a spruce and measures how high the lichen grows in the tree. (umu.se)
  • Thin pendulous lichens, for example, Usnea longissima , are particularly sensitive to environmental hazards such as air pollution, forestry, and climate change, yet are vital components of forest canopies worldwide. (umu.se)
  • Lichens may look like small plants, but they're actually composites of a fungus and an algae. (nps.gov)
  • The algae in lichens photosynthesize (create food from sunlight energy), and both the algae and fungus absorb water, minerals, and pollutants from the air, through rain and dust. (nps.gov)
  • Pollution can also cause the death of the lichen algae, discoloration and reduced growth of the lichen fungus, or kill a lichen completely. (nps.gov)
  • Every lichen is a partnership of two different organisms, a fungus whose tissue provides the physical structure to support a second organism capable of photosynthesis. (carnegiemnh.org)
  • Lichens are not vascular plants or even a single organism, but are a partnership between a fungus and one or more algaeor cyanobacteria. (nih.gov)
  • Besides providing a physical way to anchor the lichen to a surface, the fungus provides shelter and moisture for the algae. (nih.gov)
  • This richly illustrated, authoritative guide to the lichens of California draws new attention to these striking and ecologically important organisms, which are symbionts-representing a relationship between a fungus and alga-and highlights their beauty, diversity, and value as a natural resource. (yale.edu)
  • Lichen Cola later appears as a part of a puzzle: With there being twice as much Lichen Cola as Morel Moxie (which has three ounces), and three times as much Lichen Cola as Fungus Up , the player must deduce how many ounces of Fungus Up are there. (mariowiki.com)
  • Foliose lichens are leafy in appearance and loosely attached to the substrate. (nps.gov)
  • Frilly Drawers or Helmut Sunburst Lichen (Xanthomendoza galericulata) (Teloshistaceae family) is a foliose lichen with a distinct dark orange color. (conps.org)
  • In these cases it is imperative that alcohol consumption and tobacco products be avoided because they have both been associated with the increased risk of oral squamous cell carcinoma in ulcerative lichen planus. (medscape.com)
  • They may be close together or widespread, or grouped in lines (linear lichen planus) or rings (annular lichen planus). (hpathy.com)
  • Annular lichenoid dermatitis of youth - The histology may be identical and annular lichen striatus may actually be the same disorder. (dermnetnz.org)
  • Lichen planus usually resolves without treatment, but symptoms may be treated with corticosteroids, exposure to ultraviolet light, or lidocaine -containing mouthwashes. (msdmanuals.com)
  • Lichen planus usually leaves hypertrophic scars and dark brown postinflammatory hyperpigmentation. (medscape.com)
  • This is a report of a patient with a novel genotype-phenotype relationship of a c804 mutation of the RET proto-oncogene manifesting as medullary thyroid carcinoma (MTC) and cutaneous lichen amyloidosis (CLA). (nih.gov)
  • For most lichens the partner with the solar energy power is some form of green algae. (carnegiemnh.org)
  • The main body structure of the lichen consists of fungal filaments that surround the cells of its photosynthesizing companion, the algae. (nih.gov)
  • The lesions of lichen planus can occur anywhere on the body but favor the flexor wrists, trunk, medial thighs, shins, dorsal hands, and lower back. (medscape.com)
  • Two-thirds of patients with skin lesions will have lichen planus for 1 to 2 years with spontaneous clearing in the second year. (medscape.com)
  • Lichen planus may cause a small number of skin lesions or less often affect a wide area of the skin and mucous membranes. (hpathy.com)
  • Lichen planus (LP) is a pruritic eruption commonly associated with hepatitis C. Lesions are characteristically papular, purple (violaceous color), polygonal, and peripherally located (eg. (medscape.com)
  • Very thick scaly patches are particularly itchy and are most likely to arise around the ankles (hypertrophic lichen planu). (hpathy.com)
  • Lichen planus is a condition that forms a very itchy rash on the skin or in the mouth. (medlineplus.gov)
  • Lichen planus (LP) is a benign non-infectious skin condition which causes an itchy rash to appear on the skin or inside the mouth. (news-medical.net)
  • Constant itchy, painful bumps, scaly arms and legs, and damaged nails make lichen planus an inflammatory skin disease that's both frustrating and painful for patients trying to keep their quality of life. (news-medical.net)
  • Lichen planus, a recurring itchy disease, starts as a rash of small, separate, red or purple bumps that then combine and become rough, scaly patches. (msdmanuals.com)
  • Crustose or curst-like lichen and pronghorn antelope scat. (carnegiemnh.org)
  • The colorful trio sharing the pronghorn antelope diorama are termed "crustose" or crust-like lichens. (carnegiemnh.org)
  • Crustose lichens are the most common form present in Everglades National Park and in other subtropical and tropical regions of the world. (nps.gov)
  • Identification of crustose lichens involves viewing the external and internal structure of lichen fruiting bodies through microscopes. (nps.gov)
  • Although Everglades National Park is known for its extensive sawgrass marshes, lichen diversity is richest where trees are present. (nps.gov)
  • The diversity of Lichens is featured in this display of 9 specimens. (forestry-suppliers.com)
  • Lichens carry the name of the fungal lichen partner. (nps.gov)
  • Lichens are such an association that can be found all over, including right on campus , with two separate groups coming together to form a viable organism that otherwise would not exist. (nih.gov)
  • A lichen is an unusual organism because it is not just one organism, but two organisms that live together in symbiosis. (us-parks.com)
  • Tosti A, Peluso AM, Misciali C, Cameli N. Nail lichen striatus: clinical features and long-term follow-up of five patients. (medscape.com)
  • Patrizi A, Neri I, Fiorentini C, Bonci A, Ricci G. Lichen striatus: clinical and laboratory features of 115 children. (medscape.com)
  • Lichen planus (LP) has several types based on various clinical manifestations. (iasp-pain.org)
  • Lichen nitidus causes very small bumps (papules) on your skin. (healthline.com)
  • Lichen nitidus usually doesn't cause any other symptoms, though the papules may itch sometimes. (healthline.com)
  • Classical lichen planus is characterized by shiny, flat-topped, firm papules (bumps) varying from pin point size ('guttate') to larger than a centimetre. (hpathy.com)
  • As the lichen planus papules clear they are often replaced by areas of greyish-brown discolouration, especially in darker skinned people. (hpathy.com)
  • Lichen striatus presents as as an erythematous papules which often join together to form a linear band following Blaschko lines . (dermnetnz.org)
  • The specific antigen that triggers lichen planus is unknown, although it may be a self-peptide (or altered self-peptide), in which case lichen planus would be a true autoimmune disease. (medscape.com)
  • A renowned nature photographer best known for his contributions to the definitive reference Lichens of North America , he is currently at work on a guidebook to the wildflowers of the Sierra Nevada. (yale.edu)
  • Exposure to gold (commonly found in popular alcoholic schnapps liquors) and the metals found in photographic film development and processing have also caused a lichen planus-type eruption. (medscape.com)
  • Jones J, Marquart JD, Logemann NF, DiBlasi DR. Lichen striatus-like eruption in an adult following hepatitis B vaccination: a case report and review of the literature. (medscape.com)
  • Lichen nitidus is an eruption of tiny, flesh-colored bumps on your skin. (healthline.com)
  • What are the symptoms of lichen nitidus? (healthline.com)
  • In initial phases, lichen sclerosis has no major symptoms and does not require treatment. (estronaut.com)
  • But even in atypical cases, enough of these characteristic symptoms are present to differentiate similar appearing cases of psoriasis, papular eczema or lichen ruber. (hpathy.com)
  • Reassure patients that lichen planus is not contagious and treatment is often effective in relieving itching and improving the appearance of the rash until it goes away. (medscape.com)
  • Nail lichen striatus: report of seven cases and review of the literature. (medscape.com)
  • Lichen striatus in a pregnant woman. (medscape.com)
  • Facial lichen striatus in children: retracing the lines of blaschko. (medscape.com)
  • Correia LD, Silva de Castro CC. Association between bilateral segmental vitiligo and lichen striatus: an expression of mosaicism? (medscape.com)
  • Monteagudo B, Cabanillas M, Suárez-Amor O, Ramírez-Santos A, Alvarez JC, de Las Heras C. [Adult blaschkitis (lichen striatus) in a patient treated with adalimumab]. (medscape.com)
  • Lora V, Kanitakis J, Latini A, Cota C. Lichen striatus associated with etanercept treatment of rheumatoid arthritis. (medscape.com)
  • Lichen striatus occurring after allogenic peripheral blood stem cell transplantation in an adult with aplastic anemia. (medscape.com)
  • Shepherd V, Lun K, Strutton G. Lichen striatus in an adult following trauma. (medscape.com)
  • Yaosaka M, Sawamura D, Iitoyo M, Shibaki A, Shimizu H. Lichen striatus affecting a mother and her son. (medscape.com)
  • Co-occurrence of lichen striatus in twins. (medscape.com)
  • Simultaneous lichen striatus in siblings along the same Blaschko line. (medscape.com)
  • Ciconte A, Bekhor P. Lichen striatus following solarium exposure. (medscape.com)
  • Unal E, Balta I, Bozkurt O. Lichen striatus: after a bite by bumblebee. (medscape.com)
  • Hafner C, Landthaler M, Vogt T. Lichen striatus (blaschkitis) following varicella infection. (medscape.com)
  • Ishikawa M, Ohashi T, Yamamoto T. Lichen striatus following influenza infection. (medscape.com)
  • Verma P, Singal A, Yadav P, Sharma R. Concurrence of lichen striatus and localised pityriasis rosea: Cutaneous mosaicism. (medscape.com)
  • Arias-Santiago SA, Sierra Giron-Prieto M, Fernandez-Pugnarie MA, Naranjo-Sintes R. [Lichen striatus following Blaschko lines]. (medscape.com)
  • In lichen striatus, sections show a lichenoid infiltrate involving an epidermis which is usually acanthotic (figure 1). (dermnetnz.org)
  • The expression or unmasking of the lichen planus antigen may be induced by drugs (lichenoid drug reaction), contact allergens in dental restorative materials or toothpastes (contact hypersensitivity reaction), mechanical trauma (Koebner phenomenon), viral infection, or other unidentified agents. (medscape.com)
  • Lichen planus is a self-limited disease that usually resolves within 12-18 months. (medscape.com)
  • Lichen planus (see the image below) has been found to be associated with hepatitis C virus infection. (medscape.com)
  • A baseline inventory of bark-dwelling lichens was conducted in nine parks of the National Capital Region (NCR) from 2004 to 2006 and in 2009. (nps.gov)
  • Lichens exist in every terrestrial habitat within Everglades National Park and on all substrates, such as tree bark, rock, leaves, and soil. (nps.gov)
  • Casual viewers typically see lichens as a constituent of tree bark. (nps.gov)
  • Lichens are non-parasitic plant-like organisms that colonise the bark of trees and shrubs, as well as fences, rocks and even paving slabs. (lovethegarden.com)
  • For more detailed information about lichen ecology, including information about local research efforts, please visit the site maintained by Point Park University Professor Matthew Opdyke . (carnegiemnh.org)
  • This study suggests that the long-term survival of red-listed lichens may be threatened also in forests that have a strong protection" says Per-Anders Esseen, professor emeritus at Department of Ecology and Environmental Science, Umeå University. (umu.se)
  • In 2007, Lichens released Omns, which was intended to be a continuation of The Psychic Nature of Being using slightly different techniques in recording and editing. (wikipedia.org)
  • The closest and easiest point of comparison to White/Lichens is Lowe's own Omns album. (cokemachineglow.com)
  • Lichen planus or lichen planus-like keratosis - The infiltrate does not usually involved eccrine glands and apoptotic keratinocytes are mainly limited to basal epidermis rather than all levels of the epidermis. (dermnetnz.org)
  • If you approach this artfully recreated western scene with a little background information about lichens, you might find the colorful cluster of immobile organisms in the bottom right corner just as interesting as the four galloping centerpieces. (carnegiemnh.org)
  • Lichens are among the most colorful and abundant organisms in the world. (yale.edu)
  • Obtain a complete medication history because lichen planus-like eruptions may occur as an allergic reaction to medication for high blood pressure, heart disease, and arthritis. (medscape.com)
  • Lichen sclerosis has been found in all age groups, but most affected individuals are postmenopausal. (estronaut.com)
  • All four patients had positive patch test reactions to lichen acid mix and D-usnic acid. (nih.gov)
  • One of the patients declined to be tested with the natural deodorant, but did test positive to the lichen acid mix and d-usnic acid. (nih.gov)
  • Lichens, for instance, can teach us about ammonia (nitrogen) pollution. (waag.org)
  • With these worksheets participants were able to translate their lichen observations for specific trees into nitrogen values. (waag.org)
  • They for instance learned about the opportunities of environmental observations, and in this workshop specifically the link between nitrogen (ammonia) and lichen. (waag.org)
  • The nitrogen value calculations in this workshop are based upon studies by the BLWG (Bryologische en Lichenologsiche werkgroep of the KNNV), whose guide has served als information and inspiration for this workshop. (waag.org)