What should you know about hives on black skin?

On deeper skin tones, redness may be subtle or absent. Look for raised welts that feel itchy, warm, or prickly and that change shape, fade, or appear in another place. Hives can affect any body area and may follow heat, sweat, pressure, an infection, a food, or a medicine; sometimes no trigger is found. A rash that stays in one spot, becomes scaly, painful, blistered, or leaves bruising may not be hives. [Itchy Skin](/symptoms/itchy-skin/) and [Skin Rash](/symptoms/skin-rash/) provide useful comparisons.

Use a cool compress, avoid scratching, and wear soft, loose clothing. Pause newly introduced fragranced products if they seem to irritate the area. Photograph the welts in natural light and note their timing, movement, possible triggers, and any swelling. A pharmacist can advise whether [Antihistamine Treatment](/treatments/medical-dermatology/oral-antihistamine-therapy/) fits your circumstances. Do not assume a darker or less visibly red rash is harmless; the pattern and associated symptoms matter.

Call emergency services for hives with swelling of the tongue, lips, mouth, or throat, difficulty breathing or swallowing, wheezing, dizziness, or faintness. [Angioedema](/conditions/angioedema/) is deeper swelling that can occur alongside hives. Arrange prompt medical assessment if lesions are painful, bruised, blistered, persistent, or accompanied by fever or marked illness.

Could this changing, raised pattern be hives or another rash? Which features should I photograph? Could my recent medicine, illness, heat, pressure, or product be relevant, and what should I do if swelling develops?