RT Book, Section A1 Shinkai, Kanade A1 Fox, Lindy P. A2 Papadakis, Maxine A. A2 McPhee, Stephen J. A2 Rabow, Michael W. A2 McQuaid, Kenneth R. SR Print(0) ID 1184190188 T1 Reactive Erythemas T2 Current Medical Diagnosis & Treatment 2022 YR 2022 FD 2022 PB McGraw-Hill Education PP New York, NY SN 9781264269389 LK accessmedicine.mhmedical.com/content.aspx?aid=1184190188 RD 2024/04/19 AB ESSENTIALS OF DIAGNOSISEvanescent wheals or hives with or without angioedema.Intense itching; very rarely, pruritus may be absent.Urticaria is divided into acute and chronic forms.Most episodes are acute and self-limited (1–2 weeks).Chronic urticaria (lasting > 6 weeks) may have an autoimmune basis.