What are the cutaneous manifestations of polymyositis?

Updated: Jan 05, 2021
  • Author: Mythili Seetharaman, MD; Chief Editor: Herbert S Diamond, MD  more...
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Unlike in dermatomyositis, rash is absent in polymyositis. However, "mechanic's hands" (associated with antisynthetase antibodies), ie, hyperkeratotic eruptions over the finger pads and lateral aspects of the fingers, have been reported.

Raynaud phenomenon has been described in patients with antisynthetase antibodies. Rarely, periorbital edema may occur (best described in dermatomyositis). Calcinosis occurs in approximately 5% of patients with polymyositis (in association with scleroderma like illness). Telangiectasias are uncommon.

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