Are We Reading Patch Test Reactions in a Uniform Way? An International Contact Dermatitis Research Group Study
Background: Concern was raised within the International Contact Dermatitis Research Group (ICDRG) regarding the scoring of weak allergic versus doubtful patch test reactions. Objective: To investigate the degree of uniformity in patch test reading. Methods: Five series of fictive contact dermatitis cases were written up by the study organizer and presented to expert participants. Each series was s
