https://blogs.mercola.com:443/sites/vitalvotes/archive/2026/03/03/why-chronic-hives-keep-coming-back.aspxFor some people, hives are not a short-lived nuisance but a condition that lingers for months or even years. Chronic spontaneous urticaria, or CSU, is defined as itchy hives that persist for at least six weeks. While individual welts usually fade withinenCommunityServer 2008.5 SP1 (Debug Build: 31106.3070)