Health-care seeking behaviour for sexually transmitted infection (STI)-related symptoms is not well known in the Netherlands. Within the framework of a large representative study, the second National Survey of General Practice (NIVEL 2001), 9687 persons aged 18 years and older were interviewed about their STI and STI-related health-care seeking behaviour. In total, 1.2% of the interviewees reported STI-related symptoms in the past year (18-24 years: 5%). A (lifetime) history of STI was reported by 2.7% (18-44 years: 4%). In all, 63% of interviewees visited their general practitioner (GP) for these complaints; 20% went to an STI-clinic and/or municipal public health services and 8% to a different care-provider. A total of 9% did not undertake any action. The majority of persons with STI-related symptoms in the Netherlands visit the GP. Reported history of STI-related symptoms was twice lower in the Netherlands compared with the UK National Sexual Health Survey. Appropriate attention for sexual health in primary care is needed.