Type I Hypersensitivity to Lidocaine
December 2007 | Volume 6 | Issue 12 | Case Reports | 1222 | Copyright © December 2007
Reshma Nair Haugen MD, Clarence W. Brown MD
Lidocaine hydrochloride is the most commonly used anesthetic agent in dermatology. Despite its widespread and frequent
use, adverse reactions to lidocaine are uncommon. The majority of side effects include vasovagal reactions and local side
effects consisting of bruising and edema at the injection site. Immunologically mediated allergic reactions are thought to
account for only 1% of these adverse reactions. We report an extremely rare case of a true type I hypersensitivity allergy
to lidocaine hydrochloride.