• causes
  • Sometimes treatment cures hyperthyroidism but causes the opposite problem-too little thyroid hormone. (cigna.com)
  • Learn about the symptoms, causes, and treatment options for hyperthyroidism. (endocrineweb.com)
  • If you have been trying to lose weight by dieting, you may be pleased with your success until the hyperthyroidism, which has quickened the weight loss, causes other problems. (thyroid.org)
  • Hyperthyroidism is the opposite of hypothyroidism, which causes the thyroid gland to be underactive. (medic8.com)
  • citation needed] Some causes of tachycardia include: Adrenergic storm Alcohol Amphetamine Anaemia Antiarrhythmic agents Anxiety Atrial fibrillation Atrial flutter Atrial tachycardia AV nodal reentrant tachycardia Brugada syndrome Caffeine Cocaine Exercise Fear Fever Hypoglycemia Hypovolemia Hyperthyroidism Hyperventilation Infection Junctional tachycardia Methamphetamine Multifocal atrial tachycardia Nicotine Pacemaker mediated Pain Pheochromocytoma Sinus tachycardia Tricyclic antidepressants Wolff-Parkinson-White syndrome An electrocardiogram (ECG) is used to classify the type of tachycardia. (wikipedia.org)
  • atrial fibrillation
  • Hyperthyroidism can also cause atrial fibrillation , a dangerous arrhythmia that can lead to strokes , as well as congestive heart failure . (healthline.com)
  • In addition, those with hyperthyroidism may present with a variety of physical symptoms such as palpitations and abnormal heart rhythms (the notable ones being atrial fibrillation), shortness of breath (dyspnea), loss of libido, amenorrhea, nausea, vomiting, diarrhea, gynecomastia and feminization. (wikipedia.org)