Symptomatic dermatographism: current concepts in clinical practice with an emphasis on the pediatric population.

Symptomatic dermatographism reflects an exaggerated cutaneous response to the physical stimulus of pressure. Some consider it a common type of childhood physical urticaria. Its etiology can vary widely from drug reactions and infectious agents to systemic diseases and genetic inheritance.

Cutaneous polyarteritis nodosa: a comprehensive review.

Cutaneous polyarteritis nodosa is a rare form of vasculitis relating to small-to-medium-sized arteries. Its etiology is unknown. Clinical manifestations include tender subcutaneous nodules, livedo reticularis, cutaneous ulcers and necrosis.

Diabetic dermopathy: A subtle sign with grave implications.

Diabetic dermopathy (DD) is the most common cutaneous manifestation of diabetes mellitus. DD refers to atrophic, hyperpigmented macules characteristically located on the shins of patients with diabetes. They have an unfavorable association with the 3 most common microangiopathic complications of diabetes mellitus: neuropathy, nephropathy, and retinopathy.