Purpura anularis teleangiectodes
Abstract
Pupura annularis telangiectodes (PAT) is a rare entity belonging to the spectrum of the pigmented purpuric dermatoses. PAT presents clinically as symmetric, annular erythema with teleangiectasia on the lower extremities and preferably affects young women. Histology usually reveals extravasated erythrocytes accompanied by a lymphocyte-dominated inflammatory infiltrate in the superficial dermis. Medication can often be identified as causative. In patients with idiopathic disease, topical corticoidsteroids are the treatment of choice. Compression therapy may be supportive.
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