Multiple images of urticaria are shown. Urticarial lesions may be rounded (F) or irregular (A) in shape and uniform or mixed (G) in morphology. Individual lesions may be small (H) or large (D). Urticaria are raised plaques, although they may appear flattened in patients taking antihistamines (C). Although lesions are consistently erythematous, this may be difficult to appreciate on darkly pigmented skin (I). Some urticaria show central clearing (E).
Panel B courtesy of Andrew Samel, MD.
Panels C, F, G, and H reproduced with permission from: Goodheart HP. Goodheart's Photoguide of Common Skin Disorders, 2nd ed, Lippincott Williams & Wilkins, Philadelphia 2003. Copyright © 2003 Lippincott Williams & Wilkins.
Panel D courtesy of Lee T Nesbitt, Jr. The Skin and Infection: A Color Atlas and Text, Sanders CV, Nesbitt LT Jr (Eds), Williams & Wilkins, Baltimore, 1995.
Panel E reproduced with permission from: Fleisher GR, Ludwig S, Baskin MN. Atlas of Pediatric Emergency Medicine, Lippincott Williams & Wilkins, Philadelphia 2004. Copyright © 2004 Lippincott Williams & Wilkins.
Panel I reproduced with permission from:
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