THE MERCK MANUAL: The Merck Manual of Diagnosis and Therapymultimedia

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  • Urticaria
  • Skin Lesion (Urticaria)

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    Skin Lesion (Urticaria)

    Urticaria (wheals or hives) are migratory, elevated, pruritic, reddish lesions caused by local dermal edema.

    Image provided by Thomas Habif, MD.

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