Swelling of deeper layers of skin and mucous membranes, typically affecting the face, lips, tongue, and throat. It can be allergic or non-allergic and may be life-threatening if it involves the airway.
From Greek 'angeion' meaning 'vessel' and 'oidema' meaning 'swelling.' The term describes swelling caused by fluid leaking from blood vessels into deeper tissue layers, coined in the late 19th century.
Angioedema is like urticaria's deeper, more dangerous cousin - while hives stay on the surface, angioedema dives deep into tissues and can make you look like you've been stung by a giant bee! When it hits the throat or tongue, it becomes a race against time to keep the airway open.
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