• Allergic contact dermatitis was elicited with Toxicodendron antigen and the patch test site examined at various time intervals up to one week. The degree of inflammation was rather constant during the observation period. The mean erythema score at 168 hours was not significantly different from the score at 24 hours. These data support the use of a delayed (96-hour) patch test reading as a guide to discriminating between allergic and irritant patch test reactions.
(Arch Dermatol 1984;120:1022-1024)
Dahl MV, Pass F, Trancik RJ. Toxicodendron Antigen Patch Test: Degrees of Inflammation Observed After Various Time Intervals. Arch Dermatol. 1984;120(8):1022–1024. doi:10.1001/archderm.1984.01650440052018
Browse and subscribe to JAMA Network podcasts!
Customize your JAMA Network experience by selecting one or more topics from the list below.
Create a personal account or sign in to: