TY - CHAP M1 - Book, Section TI - Reactive Erythemas A1 - Shinkai, Kanade A1 - Fox, Lindy P. A2 - Papadakis, Maxine A. A2 - McPhee, Stephen J. A2 - Rabow, Michael W. A2 - McQuaid, Kenneth R. PY - 2022 T2 - Current Medical Diagnosis & Treatment 2022 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. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accessmedicine.mhmedical.com/content.aspx?aid=1184190188 ER -