Hives. An Allergist’s Take on World Urticaria Day By Albert S Hartel MD
October 1, 2026 8:50 am
October 1 is World Urticaria Day. This year’s theme — Take Back Control: From Itch to Understanding — is a reminder that hives are more than a passing rash. Persistent itch, swelling, and unpredictable flares can disrupt sleep, work, and daily life. Better control starts with understanding what is driving the hives — and what is making them worse.
Urticaria appears as raised, itchy welts that usually fade within hours. Swelling of the lips, eyelids, hands, or throat area (angioedema) can occur with them. Acute hives last less than 6 weeks, and may follow an infection, medication, exposure, or true food allergy. Chronic hives that last more than 6 weeks are different. Chronic urticaria often has an autoimmune or mast-cell basis (release of chemicals from the allergy cells), and chronic inducible urticaria can be triggered by cold, heat, pressure, exercise, or scratching.
That does not mean outside triggers are irrelevant. Even when the underlying process is autoimmune or physical, anything that activates mast cells can add to the load, and make someone more likely to tip over. In clinic, that extra burden is often enough to turn a quiet day into a flare. Alcohol, heat, overheating, viral illness, NSAIDs, and stress are common examples. Some patients also improve when they reduce high-histamine foods.
The best evaluation looks at the pattern of symptoms, possible inducible triggers, a limited set of labs when appropriate, possible skin testing, and the factors/contributors that consistently worsen flares. The goal is to identify the type of urticaria and reduce both the underlying drive and the add-on triggers.
Treatment usually starts with limiting long term medication by minimizing triggers/contributors. First line medication is daily second-generation antihistamine, which can be increased and other medications sequentially added if breakthrough. For those still with breakthrough, Xolair (omalizumab) monthly shots, and other biologic therapies are very effective for control. Short courses of oral steroids may settle a severe flare, but they are not a long-term plan.
Control is possible. Many people who have lived with daily hives for months improve once treatment is stepped up and mast-cell triggers are taken seriously. A board-certified allergist can help clarify the diagnosis and build a plan aimed at real control — not just living with the itch.