Myopathy = muscle: weakness & wasting from abnormal structure or metabolism of muscle cells. OMIM.org lists 586 genetic defects that cause congenital myopathies. The many disorders that cause acquired myopathies are on clevelandclinicmeded.com/medicalpubs/diseasemanagement/neurology/myopathy/. History, family history, physical & neurological exams, muscle biopsy, genetic & other lab studies are needed for diagnosis.
Answered 11/4/2014
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