Angioma serpiginosum.

Angioma serpiginosum is characterized by minute, coppery to bright-red, angiomatous puncta affecting mainly girls under age 16. The eruption predominates on the lower extremities. It is usually slowly progressive and chronic. The most important histological finding is the presence of dilated and tortuous capillaries in the dermal papillae and upper dermis. Although involution may occur, it is never complete. Treatment with a pulsed-dye laser improves or eliminates the disorder.