The Fine Page: angiotensin converting enzyme angioedema. 
Angioedema/urticaria secondary to ACE inhibitor drugs is an important clinical entity, which dermatologists should be aware of as they are so widely used and their use will undoubtedly increase.  In addition to the obvious importance to the patient of promptly recognizing ACE inhibitor angioedema, uncovering the etiology of angioedema/urticaria is a rare and satisfying experience that can "make your day."