Myotonia is a rare condition in which the muscles are unable to relax after they contract. This can affect muscles throughout the body and is caused by changes in the genetics of the individual ...

Myotonia congenita is a disorder that affects muscles used for movement. Beginning in childhood people with this condition experience bouts of sustained muscle tensing (myotonia) that prevents ...

For some people, they disappear altogether. One of the symptoms of Gamstorp disease is myotonia. If you have this symptom, some of your muscle groups can become temporarily rigid and difficult to ...

A previous needle electromyogram had confirmed the presence of myotonia, but a muscle biopsy had revealed no evidence of dystrophy. Investigations Neurological examination, electrophysiological ...

This has been called myotonia atrophica, or Steinert's disease, in contradistinction to myotonia congenita, or Thomsen's disease. Recently, a man with Steinert's disease presented, in addition to ...

At the end of the trial, lamotrigine was found to reduce stiffness—the main symptom of non-dystrophic myotonia—by around the same amount as mexiletine. "Head-to-head trials comparing drugs are ...