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Population-Based Incidence of Acute and Chronic Urticaria in Southern California: 2017–2022

Year: 2025

Type: article

Abstract: INTRODUCTION: Annual variations in the population-based incidence of acute urticaria (AU) and chronic urticaria (CU) are poorly understood, specifically in relationship to non-COVID-19 viral respiratory infections (NCVRIs). OBJECTIVE: To determine the annual incidence of AU and CU, health care utilization for NCVRIs and demographic associations across 3 periods: pre-COVID-19, COVID-19 without vaccinations, and COVID-19 with vaccinations. METHODS: The researchers reviewed the medical records from 2017 to 2022 of all Kaiser Permanente Southern California Health Plan members with and without urticaria leading to health care utilization. RESULTS: = .86). CONCLUSION: There was a decrease in AU incidence during the COVID-19 era before and after vaccines. AU may be associated with NCVRIs.

Source: The Permanente Journal

DOI: 10.7812/tpp/25.135