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Tonic muscular spasm occurring after injury or infection.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a hereditary neuromuscular disease in which a contracted muscle is unable to relax for a long time; muscular relaxation proceeds very slowly. Depending on the clinical course of the disease, congenital, atrophic, cold, and paradoxical forms of myotonia are distinguished. The disease may occur in several members of a family; males are more often affected. There are no marked morphological changes in the nervous system or the muscles. There may be dysfunctions of the autonomic nervous system and the endocrine glands. Increased sensitivity to acetylcholine and potassium are characteristic of the disease. The principal sign of myotonia is impaired myofibril contractility, that is, relaxation of contracted muscles is greatly impaired. The muscles are firm to the touch. Myotonia progresses slowly, with general deterioration frequently setting in after overexposure to low temperatures, mental stress, and excessive fatigue. Treatment includes hormone therapy, vitamin therapy, and physical therapy.


Badalian, L. O., V. A. Tabolin, and Iu. V. Vel’tishchev. Nasledstvennye bolezni u detei. Moscow, 1971.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Nondystrophic myotonia: prospective study of objective and patient reported outcomes.
Schwartz-Jampel syndrome (chondrodystrophic myotonia).
distal muscles (ii) Myotonia: triggers include stress and cold (ii) DM2: tends to as well as specific affect proximal muscles medications e.g.
1: ADR disfagico, 2: and absence of disfagico, 3: not dysphagia; 2: ADR with symptoms of CNS and presence of involvement, 4: dysphagia showing congenital requiring VA and myotonia for the 3: PAIR and study of the effects presence of of myotonia.
The patient was a 59-year man suffering from congenital myotonia (patient MI-2).
Furthermore, taurine treatment diminishes skeletal muscle cramping in patients with myotonia and liver cirrhosis [5, 6].
DM1 is an autosomal dominant disorder which is characterised by clinical features such as muscle weakness, myotonia, and heart defects [7].
The patients have some characteristic symptoms, such as tremor, myotonia, and dyskinesia, etc.
"The medical name for my symptoms is benign myotonia and ataxia," Francesca says, but she prefers to think of herself as "wobbly".
Guillain-Barre syndrome Chronic sensorimotor neuropathy Vasculitic neuropathy Neuromyotonia Neuromuscular Lambert-Eaton myaesthenic syndrome junction Myaesthenia gravis Muscle Polymyositis/dermatomyositis Necrotising myopathy Myotonia