How is urticaria different to angioedema?
Angioedema is the sudden, pronounced erythematous or skin-coloured swelling of the lower dermis and subcutis as well. Patients usually complain of pain rather than itchiness. There is slower resolution of wheals, over 72 hours. Angioedema, when associated with urticaria, usually affects the face and lips, extremities, and/or genitals.
If your patient has recurrent angioedema without urticaria, think of another angioedema disorder such as C1 esterase inhibitor deficiency.
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