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Article
March 10, 1900

POLYMYOSITIS.

JAMA. 1900;XXXIV(10):625-626. doi:10.1001/jama.1900.02460100047008
Abstract

As a rule diseases of the muscles are not described systematically in the text-books, and when described they make only a small chapter, although these tissues may be involved in various morbid conditions, some congenital, others acquired. Thus, they may undergo atrophy or hypertrophy from various causes, may be the seat of inflammation, of new-growths, or of degenerative changes, of spasm or of paralysis. These conditions are, however, most commonly secondary or consecutive, in spite of the generally exposed situation of the muscles. Primary, or rather independent, affections of muscle have been described: 1. Dermato-myositis, in which also the skin is generally involved. This condition is attended with rheumatoid pains, stiffness and tumefaction of the extremities, febrile movement, firm edema, especially of the face, redness of the skin, impaired mobility, excessive sweating and enlargement of the spleen. The morbid process may involve the muscles of respiration and of deglutition, and

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