A patient develops sudden swelling of the lips after exposure to a trigger. What is this reaction called?

Angioedema is rapid, localized swelling of the lips/face (and potentially airway) from allergic or drug-related causes (e.g., ACE inhibitors); monitor for airway compromise.Other options: Cellulitis is a spreading infection; sialadenitis is salivary gland inflammation; macroglossia is tongue enlargement.Key exam takeaway: Sudden lip/face swelling = angioedema; watch the airway and identify the trigger.