The object of this study was three-fold:(1) To analyse the factors which prompted patients to attend the 'Special Clinic' of the Royal Victoria Hospital, Belfast, and so to determine the relative importance of symptoms in patients of both sexes.(2) To judge the effect of venereal disease propaganda, health education, and contact-tracing in bringing to the clinic patients in whom symptoms were absent or ignored.(3) To compare histories from women with gonorrhoea, trichomoniasis, or both infections, to discover the extent to which symptoms prompted attendance, and to judge whether the reasons for attendance would give a valid means of assessing the overall severity of symptoms from each type of infection.The first two parts of the study included all patients making their first ever appearance at the clinic from the period January 1, 19691, , until June 30, 1969. In all there were 702 patients, 446 men and 256 women, giving a male/female ratio of 1-74 to 1. In the third part of the study, the cases ofwomen with gonorrhoea, trichomoniasis, or both, who were diagnosed during the years 1967, 1968, and the first 6 months of 1969, were included.Received for publication July 6, 1970 Findings and commentary Table I