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myotonia |
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myotoniaDisorder causing difficulty relaxing contracted voluntary muscles. All or only a few may be affected. Myotonia seems to originate in the muscles (myopathy) rather than the nervous system. Certain toxins can cause it. A hereditary form, myotonia congenita (Thomsen disease), can affect eyelid and eye motion, swallowing, or talking. Quick movements cause muscle stiffening. There is also a myotonic form of muscular dystrophy. Analgesics, anesthetics, and anticonvulsant drugs can alleviate the symptoms. myotonia [‚mī·ə′tō·nē·ə] (medicine) Tonic muscular spasm occurring after injury or infection. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The features of classic myotonic dystrophy include myotonia (skeletal muscle hyperexcitability and slowed relaxation time), slowly progressive muscle weakness, cardiac conduction defects, pain, peripheral neuropathy, frontal balding, temporal wasting, cataracts, and endocrine disturbances such as diabetes. [8(p1132)] Positive diagnoses (MH) and anesthetic-induced reactions with a presentation similar to MH have been reported in clients with neuroleptic malignant syndrome, central core disease, myotonia congenita, myotonic dystrophy, Duchenne muscular dystrophy, congenital muscular dystrophy, King-Denborough syndrome, osteogenesis imperfecta, myelomeningocele,[13] and hyperkalemic periodic paralysis. [52] Systemic lupus erythematosis,[3] poliomyelitis, tabes dorsalis, myotonia congenita, and neurological flaccid conditions[38] are also excluded from the diagnosis of HMS. |
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