An inherited condition, Myotonia congenita is non-progressive and its symptoms occur during early childhood. This condition does not cause muscle shrinkage, instead it is responsible for enlargement of muscles and increased muscle strength. There are two kind of Myotonia congenita- becker-type myotonia and Thomsen disease. While the first is very common the latter is highly rare. The various symptoms of this condition include stiffness and weakness of muscles, so severe that it makes breathing and swallowing tough, causes muscle cramps, slow reflexes and even muscle break down. Myotonia congenita offers individuals a chance to lead a fairly normal life as it does not progress.
HOW IS MYOTONIA CONGENITA DIAGNOSED?
The Thomsen type myotonia follows an autosomal dominant pattern.