An analysis of 501 consecutive contact clinic consultations.

A simple micro-computer program was used to analyse the results of testing 501 consecutive patients attending a patch test clinic. 64% of males and 71% of females had positive tests; 17% of males and 12% of females had occupational dermatitis; 16% of males and 15% of females had irritant contact dermatitis; and 13% of males and 19% of females had a history of atopic eczema.