What should you know about randomly getting hives?

Hives are temporary raised areas caused by the release of inflammatory chemicals in the skin. Individual welts may change shape, appear in different places, and fade while new ones arise. Triggers can include infections, heat, cold, pressure, exercise, stress, foods, medicines, or insect contact, but a clear cause is not always found. Hives may occur with Itchy Skin, Skin Rash, or Skin Swelling. Deeper swelling of the lips or eyelids is called angioedema and can accompany hives.

Photograph a flare and keep a simple diary of foods, medicines, illness, exercise, heat, pressure, and timing. Wear loose clothing, use cool rather than hot water, and avoid scratching. Do not stop a prescribed medicine without medical advice, even if you suspect it triggered a reaction. A clinician may discuss Antihistamine Treatment; an Oral Corticosteroid Treatment may sometimes be considered for selected severe flares. Treatment choice depends on your health, medicines, and the pattern of symptoms.

Call emergency services immediately if hives occur with trouble breathing, wheezing, throat tightness, voice change, dizziness, faintness, or swelling of the tongue or inside the mouth. These symptoms can indicate a serious allergic reaction. Seek prompt medical advice when episodes keep returning, last beyond a brief flare, disturb sleep, follow a new medicine, or leave bruising, pain, or marks rather than fading normally. Recurrent swelling without obvious welts also warrants assessment for Angioedema.

Could this pattern be Hives or another rash? Which triggers should I track? What treatment can I use during a flare? What symptoms require emergency action, and do I need a written plan?