Hives, or urticaria, are itchy, red welts that can appear suddenly and disappear quickly. While often linked to food allergies or medications, many other hidden triggers can cause them. “Understanding these hidden triggers can help you pinpoint the source of your outbreaks and take effective steps to manage them.”

Stress and anxiety release histamine, causing inflammation. Temperature changes—from a cold breeze to a hot shower—can also trigger hives, as can pressure from tight clothing. Some foods, like tomatoes, citrus, or fermented products, may be culprits, along with certain medications not typically linked to allergies, such as ibuprofen or some blood pressure drugs.

Infections like colds, mono, or hepatitis, as well as thyroid disease, may lead to hives. Sunlight can cause solar urticaria, while hormonal changes during periods, pregnancy, or menopause may also increase risk. Rarely, water contact—regardless of temperature—can trigger outbreaks. Everyday products with fragrances or harsh chemicals are another possible source.

Prevention includes avoiding triggers, wearing loose clothing, using unscented products, and keeping a food diary. Antihistamines can offer relief.

See a doctor if hives last more than six weeks or if swelling affects your face, lips, or throat. “By staying alert to your surroundings, lifestyle habits, and health conditions, you’ll be better equipped to uncover your personal triggers.”