Prevalence, Comorbidities, and Current Management of Chronic Spontaneous Urticaria in Japan: Retrospective Claims Database Study.

ABSTRACT: Chronic spontaneous urticaria (CSU) affects 0.5%-1.0% of the population worldwide. However, information on the prevalence, comorbidities, and treatment patterns of CSU in Japan is limited. This observational study consisted of a cross-sectional and longitudinal part. The prevalence and incidence of CSU were estimated using the JMDC claims database (JMDC Inc., Tokyo, Japan). CSU was defined as either 'idiopathic urticaria', 'other urticaria' or 'unspecified urticaria' based on ICD-10 codes and prescribed H₁-antihistamines for ≥ 6 weeks over a 3-month period. Comorbidities, current treatments, and healthcare resource utilization in patients with CSU were also evaluated. The prevalence of CSU increased from 1.2% in 2016 to 1.6% in 2021 with a peak in children, while the incidence o

SUBMITTER: Fukunaga A 

PROVIDER: S-EPMC12698888 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature