Acute, mostly histamine-mediated (usually occurring in acute or chronic urticaria), single or recurrent at irregular intervals, lasting 1-7 days, circumscribed swelling of the skin and/or mucosa. Frequent occurrence on the face (periorbital and lips), induced by massive edema formation in the subcutis. But also other lower and/or upper extremities.
Most common form of angioedema with close causal association with urticaria. Often occurring in the setting of chronic idiopathic urticaria, intolerance urticaria, or in other forms of urticaria.
Note: Occurrence of chronic recurrent ("idiopathic") angioedema is also possible without concomitant presence of urticaria, hereditary angioedema, or renin-angiotensin-aldosterone system blocker-induced angioedema (e.g., due to ACE inhibitors).