Myotonia Congenita Information - symptom, cause, picture, treatment of Myotonia Congenita

Myotonia Congenita Information

Myotonia congenita is commonly inherited as a dominant trait. The responsible gene may be on the long arm of chromosome 7. Generalized myotonia without weakness is usually present from birth, but symptoms may not appear until early childhood. Patients complain of muscle stiffness that is enhanced by cold and inactivity and relieved by exercise. Muscle hypertrophy, at times pronounced, is also a feature. A recessive form with later onset is associated with slight weakness and atrophy of distal muscles. Treatment with quinine sulfate, procainamide, tocainide, mexiletine, or phenytoin may help the myotonia, as in myotonic dystrophy.

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