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Article
November 28, 1966

Muscular Dystrophy's Mimic

JAMA. 1966;198(9):36. doi:10.1001/jama.1966.03110220018008

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Abstract

A large number of patients sent to clinics with the diagnosis of muscular dystrophy are found to be suffering from some other malady, a California clinician reported.

Speaking at an international scientific conference on "Exploratory Concepts in Muscular Dystrophy and Related Disorders," Carl M. Pearson, MD, said that the disease most frequently mistaken for muscular dystrophy is polymyositis. The conference, sponsored by the Muscular Dystrophy Associations of America, was held at Arden House, Harriman, NY.

"Polymyositis, with its protean manifestations and variable course, may mimic all of the forms of muscular dystrophy so closely that differentiation becomes difficult," explained Dr. Pearson.

Polymyositis Described  Polymyositis has been described and reviewed extensively in the literature as "a group of inflammatory disorders of muscle of varied etiology." The condition is con fined to muscle tissues in some tients, but most evidence points to some systemic disturbance indicating that the myopathy is only part

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