myotonia

Myotonia is a symptom of a small handful of certain neuromuscular disorders characterized by delayed relaxation (prolonged contraction) of the skeletal muscles after voluntary contraction or electrical stimulation.Myotonia is the defining symptom of many chanelopathies such as myotonia congenita, paramyotonia congenita and myotonic dystrophy.Generally, repeated contraction of the muscle can alleviate the myotonia and relax the muscles thus improving the condition, however, this is not the case in ...