What Are the Symptoms and Treatments for Chronic Urticaria?

Chronic urticaria is a persistent skin condition characterized by recurrent episodes of itchy, raised wheals—often accompanied by angioedema—that last for six weeks or longer. Unlike acute urticaria, which typically resolves within days to weeks and is frequently triggered by identifiable factors such as infections or allergens, chronic urticaria is rarely attributable to IgE-mediated allergy. Instead, it is most commonly autoimmune in nature, with autoantibodies targeting the high-affinity IgE receptor (FcεRI) or, less frequently, IgE itself.

Clinically, patients experience pruritic, erythematous, and transient wheals that vary in size and shape, often coalescing into larger plaques. These lesions typically resolve within 24 hours without bruising or residual marks—but new ones emerge elsewhere, creating a relapsing-remitting pattern. Approximately 40% of individuals with chronic spontaneous urticaria also develop angioedema—deeper, non-pitting swelling affecting the lips, eyelids, hands, feet, or mucosal surfaces—which may occur independently or alongside wheals.

First-line management centers on second-generation, non-sedating H1-antihistamines—such as loratadine, cetirizine, or fexofenadine—at standard doses. When symptoms persist despite adequate dosing, guidelines recommend up-titrating to two to four times the licensed dose, provided safety and tolerability are maintained. For patients refractory to high-dose antihistamines, omalizumab—a humanized monoclonal antibody that binds free IgE—is strongly recommended as add-on therapy and has demonstrated rapid, sustained efficacy in over 60% of cases. In select patients unresponsive to omalizumab, cyclosporine or other immunomodulatory agents may be considered under specialist supervision.

Diagnostic evaluation focuses on excluding secondary causes—such as thyroid autoimmunity, chronic infections, or systemic inflammation—rather than extensive allergy testing, which rarely yields actionable findings. A thorough history, physical examination, and targeted laboratory workup (e.g., thyroid-stimulating hormone, C-reactive protein, complete blood count) are sufficient for most patients. Importantly, chronic urticaria is not life-threatening in the absence of upper airway involvement, but its impact on quality of life—including sleep disruption, anxiety, and functional impairment—can be profound and warrants comprehensive, patient-centered care.