Abstract: 【Abstract】 Urticaria is a disease characterized by wheals and pruritus, which is common in clinical practice. Some cases show poor responses to treatment, and recurrence often occurs. This guideline aims at further supplementing and perfecting the previous version （2014 version） of the guideline for diagnosis and treatment of urticaria in China based on recent research advances in urticaria in China and other countries. This guideline is suitable for both Chinese adults and children of Han nationality with urticaria. The guideline updates and elaborates the definition, pathogenesis, classification, diagnosis and treatment of urticaria, and may serve as a more scientific and authoritative reference for diagnosis and management of urticaria.

Key words: Urticaria, Guidelines, Diagnosis, Therapy