|Color Atlas of Pediatric Dermatology|
Section 13. Urticarial, Purpuric, and Vascular Reactions
Topics Discussed: acute hemorrhagic edema of childhood.
Sections: Idiopathic Thrombocytopenic Purpura, Aphthous Stomatitis, BehçET's Syndrome, Erythema Ab Igne.
Excerpt:"This striking disorder occurs in infants between 4 months and 2 years of age. The sharply circumscribed lesions favor the extremities and are edematous, ecchymotic, and purpuric. Edema of the ears and eyelids may also be noted. Biopsy of an active lesion reveals an intense leukocytoclastic vasculitis. However, in contrast to Henoch-Schönlein purpura, systemic symptoms are very rare. There may be several outbreaks of new lesions, but the entire process generally resolves in approximately 2 weeks...."
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