Contact sensitivity to drugs administered systemically occurs mainly among
healthcare workers, pharmaceutical operatives, and veterinary surgeons. Of
the 14,689 patients suspected of contact allergy examined in our department
from 1978 to 2001, occupational allergic contact dermatitis from drugs in
healthcare workers was diagnosed in 33, the first in 1980. The most common
sensitizers were antibiotics such as penicillins, cephalosporins, and amino
glycosides. They accounted altogether for 35 positive patch tests, followed
by propacetamol hydrochloride, and ranitidine hydrochloride, which elicite
d 10 and 7 positive reactions, respectively. The aim of this report is to d
raw attention to the importance of occupational contact allergy to drugs in
healthcare workers. By far the greatest number of the sensitized patients
in this series were nurses, there being 26 nurses, 4 veterinarians, 2 pharm
acists, and 1 medical doctor.