Emedicine.com Urticariab(Health/Skin_Disorders) emedicine.com Description: img src=imgstar.gif width=15 height=16 alt= Urticaria Urticaria, commonly known as... hives, is a frequent complaint of patients in the ED. It consists of circumscribed areas of raised erythema and edema of the superficial dermis. Urticaria can be acute or chronic, and a variety of urticarial variants exist, such as hereditary angioedema and anaphylaxis.By definition, the acute form of urticaria lasts less than 46 weeks, and the chronic form lasts more than 46 weeks. Although the treatment for urticaria is specific and straightforward, the list Specializes in: urticariahivesallergyallergic reactionanaphylaxisanaphylactoid reactionangioedemacircumscribed...areaserythema