Gottron papule

Gott·ron papule

(gaht'trŏn),
Associated with dermatomyositis, Gottron papules are slightly raised violaceous papules and plaques found covering bony prominences, particularly the metacarpophalangeal, proximal interphalangeal, and distal interphalangeal joints.
References in periodicals archive ?
The rash on his skin, including the periungual rash and the Gottron papules on his knuckles, were fading.
Further clinical findings included an erythematous facial rash, periorbital edema, Gottron papules, thickened fingertip skin, and abnormal capillary dilatation of nail folds.