Did you know ...?

Millions of teens become infected each year with sexually transmitted infections (STIs) also called STDs.

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Guide to STIs
Sexually Transmitted Infection (STI)

Anyone who has unprotected sex can get a Sexually Transmitted Infection (STI), you don’t need to have had lots of partners.


Many STIs can be easily treated but if you don't get them checked out and treated quickly then STIs can be painful and can cause permanent long-term health problems.

Click on STI's for more information on ten of the most common infections and how you get them.

Some STIs have no symptoms but if you experience any of the following you should definitely seek advice:

  • Unusual discharge from the vagina
  • Unusual discharge from the penis
  • Pain or burning when you pass urine
  • Itches, rashes, lumps or blisters around the genitals or anus
  • Pain and/or bleeding during sex
  • Bleeding between periods
  • Bleeding after sex
  • Pain in the testicles or lower abdomen

If you have any of these symptoms, or if you've had unprotected sex and want to make sure you haven't got an STI, you can visit:
  • A 4YP Clinic - click here for more info
  • Any NHS genitourinary medicine (GUM) clinic/sexual health clinic - For details of selected local sexual health clinics click here
  • Your GP
  • A contraceptive/family Planning Clinic


Advice and information is free and confidential. To protect yourself from catching an STI always use a condom!

To find out what happens when you go for sexual health check-up click on The Examination