What should you know about constant hives?

Hives are raised, itchy areas that can appear suddenly and fade while new areas develop elsewhere. Individual welts often change shape or location, and heat, pressure, infection, medicines, foods, or no clear trigger may be involved. Angioedema is deeper swelling that can affect the lips, eyelids, hands, feet, or throat alongside hives. Hives that keep recurring need a pattern-based assessment rather than assuming one trigger from a single episode.

Keep a simple record of episodes, including foods, medicines, illness, heat, pressure, exercise, and emotional stress around the onset. Use cool compresses, avoid overheating and tight clothing, and choose fragrance-free skin products. An oral antihistamine may be recommended by a pharmacist or clinician; take it only as directed and check suitability if pregnant, treating a child, or taking other medicines. Do not repeatedly use oral corticosteroids without medical supervision because they are reserved for selected situations.

Call emergency services immediately for hives with swelling of the tongue or throat, trouble breathing, wheezing, faintness, or difficulty swallowing. Seek prompt medical advice for repeated episodes, extensive skin swelling, bruising-like marks, fever, joint pain, or lesions that stay fixed in one place rather than fading. A clinician can assess whether the pattern is urticaria or another condition.

Ask whether your pattern fits urticaria, how to use an antihistamine safely, and which symptoms should trigger emergency action. Bring the episode record and list every medicine, supplement, recent infection, and possible exposure.