Guernsey's health service has urged youngsters who fear they may have contracted a sexually transmitted infection to seek medical help.
The call came as the UK reported a significant rise in STIs, particularly among people aged under 25 years.
Yvonne Le Page, from the Guernsey Health Promotion Unit, said it was important to go and see someone.
She said the Family Planning Service, the Sexual Health Service and GPs could all help.
Mrs Le Page said: "The services are hugely confidential, that's one of the things they guarantee.
"What they will ask is about is tracing partners and it's particularly important if you have a new partner or the partner that you've been with so that they also know about the illness."