Contact urticaria and allergic contact dermatitis to lidocaine in a patient sensitive to benzocaine and propolis.

摘要

Allergic contact dermatitis (ACD) to lidocaine is rare (1); simultaneous occurrence with type I hypersensitiv-ity is extremely rare (2), while concomitant delayed contact sensitivity to lidocaine and benzocaine seems to be exceptional (3). In 1998, Weightman and Turner (3) reported 2 patients with ACD from lidocaine and positive patch test to benzocaine.