Red, thickened, scaly skin over the knuckles (Gottron's sign) associated with dermatomyositis, an autoimmune disease of the skin and muscles.

This violet-colored inflammation (erythema) over the knuckles is caused by Dermatomyositis. Other skin conditions produce more redness, while the color of this lesion is violet. There may also be inflammation in the muscle tissue.

This photograph demonstrates the sign "heliotrope eyelids" in which the eyelids develop a brown (violaceous - rather than red) color. Heliotrope eyelids and Gottron's papules on the knuckles are characteristic findings in dermatomyositis.

The appearance of purple (violaceous) plaques on the knees may be associated with dermatomyositis. Typically, most lesions associated with other diseases are red (erythematous).

This is Gottron's sign, seen in dermatomyositis (an inflammatory disease of the muscles and skin). Violet-colored inflammation over the knuckles is an important diagnostic finding in dermatomyositis, since other skin conditions produce more redness.

Candida paronychia produced periungual erythema, edema and nail fold maceration.

Inflammation of the connective tissues (dermatomyositis) typically produces a reddish-purple (violaceous) rash. The rash is named after the tendency of plants to grow toward the sun (heliotropic) and is characteristic of dermatomyositis.