Abstract
Of 716 men attending consecutively a dermatovenereological clinic in Riyadh, Saudi Arabia, over a period of 1 yr 70.1% had non-specific genital infection, a figure which is 4 times that for gonorrhoea and 13 times that for syphilis. Most of the patients were single men aged between 20-29 yr and had acquired their infections abroad. Although Riyadh is a cosmopolitan city with a large foreign population 79% of the infections occurred in local inhabitants.