Dermatology

A 46-year-old woman with type 1 diabetes mellitus presented to the emergency department with wheals, flares, and severe pruritus of her face and trunk.

A 25-year-old man presented with an erythematous, pruritic, scaly, macular rash that had begun behind his ears and spread over his neck, chest, trunk, and upper and lower extremities.

This patient has a 2-year history of red plaque with a yellow atrophic center on the leg, which has ulcerated over the past 3 months.

These velvety, hyperpigmented plaques are secondary to acanthosis nigricans, a common problem in patients with insulin-resistant states.

Hundreds of yellow papules developed on the trunk and extremities of this patient, whose diabetes was uncontrolled.