Respiratory · UKMLA & AKT
Urticaria and angioedema
A free high-yield preview for the UKMLA Applied Knowledge Test, covering how to recognise this condition. The full SA Note notes add investigations, management and complications, with practice questions on this topic.
Key high-yield points
- Urticaria - superficial dermal weal (pale/red swelling) with surrounding erythema flare, intense pruritus, individual lesions resolve within 24 hours
- Angioedema - deep dermal/subcutaneous swelling, less itchy, potentially life-threatening if laryngeal
- Laryngeal angioedema - stridor, hoarseness, dysphagia = airway emergency
If lesions persist >24 hours, are painful, non-blanching, and leave pigmentation - consider vasculitic urticaria, not simple urticaria.
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