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A cutaneous lesion associated with primary polymyositis.

Polymyositis is a nonsuppurating inflammatory disease of the striated muscle characterized clinically by the presence of proximal muscular weakness that is sometimes associated with pain.1This disease falls within a broader category known asidiopathic inflammatory myopathy, which includes the forms of myositis that are secondary to connective tissue disease and neoplasms and myositis with inclusion bodies.2Polymyositis is differentiated from dermatomyositis by the absence of the characteristic cutaneous lesions.1 Stahl et al3reported the presence of hyperkeratosis of the fleshy pad and the lateral aspect of the fingers to be a marker for idiopathic inflammatory myositis. We describe a woman with primary polymyositis associated with hyperkeratosis of the fingers of both hands. Report of a Case. A 55-year-old housewife presented in August 1991 with arthromyalgia, predominantly in the-upper limbs, affecting the shoulders, wrists, and metacarpophalangeal and proximal interphalangeal joints of both hands. She also complained