Polymyositis and Dermatomyositis Symptoms, Signs and Causes

Rashes are located on the forehead, lower legs, neck, shoulders, forearms, chest, back, eyebrows, knee areas, medial malleolus, back surfaces of joints between phalanges, lateral side (Gottron’s symptom). Hyperemia of the base or periphery of the nails is also possible. On the skin of the lateral surface of the fingers, it is possible to develop desquamate dermatitis accompanied by the appearance of cracks. Possible formation of subcutaneous calcifications, especially in children.