M.A. (Clinical Psychology) / The purpose of this study was to determine whether a behavioural intervention could reduce scratching behaviour in atopic dermatitis. The literature dealing with the psychological aspects, and existing approaches to the treatment of atopic dermatitis and related dermatoses was reviewed. It was hypothesized that if subjects with atopic dermatitis were able to reduce their scratching behaviour they would show a corresponding reduction in size of identified lesions. In order to test these hypotheses, SUbjects with atopic dermatitis participated in a self-control programme lasting between eight and ten weeks. Of the seven subj ects that originally started the programme, four completed it. SUbjects' self-monitoring details reflected changes in scratching behaviour, and a specially designed grid was used to measure changes in lesion size. Inspection of the data showed that two SUbjects eliminated their scratching behaviour and lesions entirely; the other two showed marked reduction. The results of this study indicate that self-control procedures could be usefully applied as adjuncts to the conventional dermatological management of atopic dermatitis.