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Results 1 - 1 of 1 for Polymyositis
  1. Myositis (National Library of Medicine)  
    ... disease can cause it. Two specific kinds are polymyositis and dermatomyositis. Polymyositis causes muscle weakness, usually in the muscles closest ... these diseases, but you can treat the symptoms. Polymyositis and dermatomyositis are first treated with high doses ...