• We present a family with dominantly inherited myotonia congenita and painful, electrically silent muscle contractions after exertion. In two family members, painful muscle contractions occurred coincident with hypothyroidism, and improved after thyroid replacement therapy. It is probable that this family represents a disease that is similar to but distinct from the dominant form of myotonia congenita.
Sanders DB. Myotonia Congenita With Painful Muscle Contractions. Arch Neurol. 1976;33(8):580–582. doi:10.1001/archneur.1976.00500080058009
Customize your JAMA Network experience by selecting one or more topics from the list below.
Create a personal account or sign in to: