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Dermatology

Urticaria and Angioedema

Acute vs chronic urticaria classification, anaphylaxis exclusion, and antihistamine step-up management

Source: BSACI / EAACI Guidelines 2022

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Urticaria / Angioedema

Urticaria: transient itchy wheals (hives) lasting <24h at any one site. Angioedema: deeper swelling (dermis/subcutaneous). Acute: <6 weeks. Chronic: ≥6 weeks. Angioedema without urticaria: consider hereditary angioedema (HAE — C1 inhibitor deficiency).

Related

Curated clinical cross-links plus same-class fallbacks.

Decision support only. Always apply local guidelines and clinical judgement.