摘要慢性瘙痒是多种疾病的共同症状，严重影响患者的生活质量。瘙痒发生机制复杂，病因诊断与治疗常面临挑战。为提升我国临床医生对慢性瘙痒的认识，规范诊治行为，中国医师协会皮肤科医师分会组织国内部分专家，在我国《慢性瘙痒管理指南（2018版）》的基础上，基于国内外研究现状与进展，对慢性瘙痒的分类、病因及机制等方面进行了更新，并通过德尔菲法广泛征询专家意见，为慢性瘙痒的病因诊断与治疗方案提供专家意见与循证医学证据。

abstractsChronic pruritus is a common symptom of various diseases, causing severe negative impacts on patients' quality of life. Due to its complex pathogenesis, etiological diagnosis and treatment are often challenging. To improve the understanding of chronic pruritus among Chinese clinicians and to standardize diagnosis and therapeutic practices, the China Dermatologist Association organized experts in China to update the classification, etiology, and pathogenesis of chronic pruritus based on the "Guidelines for the Management of Chronic Pruritus (2018 edition)", current research status and progress in China and other countries, as well as extensive consultation with experts in China through the Delphi method, aiming to provide expert opinions and evidence-based medical guidance on the etiological diagnosis and treatment of chronic pruritus.