Familial Myotonia
By Aziz Shaibani, MD, FAAN
A 53-year-old man who noticed difficulty relaxing his hand grip after a hand shake at age 35. Gradually he developed stiffness of the legs muscles and cataract. His asymptomatic daughter’s examination revealed grip and percussion myotonia. The earlier appearance of symptoms in the daughter is due to a phenomenon called what?
Watch the video, read the case, and test you diagnostic skill.
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