Chronic urticaria
A total of 29 studies have reported the occurrence of rhinitis in
6,082,712 patients with chronic urticaria (CU), resulting in a pooled
prevalence of 28.7% (95% CI
20.4%–36.9%).11-13,17,18,40,41,43,44,46-53,55,56,58-63,65The pooled prevalence of AR was 27.7% (95% CI, 8.8%–46.7%) in
patients with CU. The prevalence was 30.9% (95% CI, 11.9%–50.0%) in
children and adolescents and 26.8% (95% CI 19.5%–34.2%) in adults.
When stratifying CU subtypes, the prevalence of rhinitis was 33.4%
(95% CI, 8.3%–58.5%) in patients with chronic spontaneous urticaria
(CSU) and 34.6% (95% CI 17.3%–51.9%) in those with chronic
idiopathic urticaria (CIU). Only one study reported the prevalence of
rhinitis in patients with both CSU and CIU (31.7%).62By geographical area, the prevalence of rhinitis was 23.7% (95% CI
13.2%–34.1%) in European, 30.4% (95% CI 16.2%–44.6%) in Asian,
33.5% (95% CI 18.1%–48.9%) in North American, and 29% (95% CI
20.6%–37.5%) in South American patients with CU.