Background: Chronic Urticaria, CU, including Chronic Spontaneous Urticaria, CSU and Chronic Inducible Urticaria, CIndU, significantly affect patients' health-related quality of life, HRQOL. To date, no systematic reviews or meta-analyses have summarized the HRQOL tools used in CU and the magnitude of HRQOL impact in CU.
Objective: To determine the HRQOL tools used in CU, the burden of CU regarding HRQOL in adults and children, and whether CU subtypes differentially impact HRQOL.
Methods: We searched MEDLINE, Embase, Web of Science, Cochrane, CINAHL, and PsycINFO from inception to August 20th, 2023, for original articles including populations of adult or pediatric patients with CU or any of its subtypes where HRQOL was reported using any quality-of-life instrument. We conducted a series of meta-analyses to pool and compare data on HRQOL outcomes by CU subtype, primarily utilizing the Dermatologic Quality of Life Index, DLQI.
Results: We identified 123 publications reporting on 23,508 unique patients with CU and/or its subtypes. The meta-analysis revealed a moderate to large impact of CU and its subtypes on HRQOL. In adults, pooled mean DLQI score was 8.9, 95%CI=7.7-10.1 for CU, 11.0, 95%CI=9.3-12.7 for CSU, 8.3, 95%CI=6.8-9.8 for CIndU, and 10.0, 95%CI=7.7-12.4 for concomitant CSU/CIndU. In children with CSU, the mean CDLQI score was 6.9, 95%CI=1.9-12.0. The analysis revealed high heterogeneity, likely due to differences in patient population and study design.
Conclusion: CU and its subtypes significantly impair HRQOL. The clinical implication of the differences between CU subtypes needs to be further explored, along with additional research in pediatric populations.
Keywords: Chronic Inducible Urticaria; Chronic Spontaneous Urticaria; Chronic Urticaria; Health-Related Quality of Life.
Copyright © 2025. Published by Elsevier Inc.