What should you know about itchy hives on legs?

Hives are usually raised and itchy, with edges that may change over time. On the legs, pressure from socks, boots, tight trousers, kneeling, or prolonged sitting can be relevant. Heat, sweating, a new detergent, body product, or an insect exposure may also contribute. Photograph the skin before it changes and note whether each welt fades and reappears elsewhere or remains fixed.

A fixed, scaly, crusted, or painful patch may not be hives. Bruise-like colour, warmth, pus, or marked tenderness deserves assessment. Widespread itchy skin or a rash beyond the legs can provide useful context; see [Skin Rash](/symptoms/skin-rash/) and [Itchy Skin](/symptoms/itchy-skin/). Deeper swelling around the legs or elsewhere may fit [Angioedema](/conditions/angioedema/).

Remove tight clothing, keep the legs cool, and use a cool compress rather than scratching. Wash gently and avoid newly introduced fragranced products until the pattern is clearer. If footwear or socks seem involved, switch to a loose, breathable option and wash garments with a familiar mild detergent. Do not puncture, squeeze, or vigorously brush the welts.

A pharmacist or clinician can advise whether [Antihistamine Treatment](/treatments/medical-dermatology/oral-antihistamine-therapy/) fits your health and medicines. If episodes continue, take your photographs and trigger notes to an appointment. Medical treatment should be guided by the appearance and accompanying symptoms, not by location alone.

Seek emergency help for breathing difficulty, throat tightness, faintness, or swelling of the tongue or lips. Arrange prompt care for rapidly increasing leg swelling, severe pain, fever, purple or bruise-like lesions, or trouble walking. Book routine review when the welts recur, stay in the same spot, leave marks, or interfere with sleep.

Do these lesions behave like [Hives](/conditions/urticaria/), or could pressure, contact irritation, bites, or another rash explain them? Which triggers should I test carefully? What plan should I follow if swelling spreads?