Sexually Transmitted Infections

Sexually transmitted infections (STIs) are passed from one person to another through unprotected sex or genital contact.

Some STIs have no symptoms and if left untreated can lead to more serious health problems like infertility. Most STIs can be treated and cured when they are caught early enough.

STI symptoms

  • Unusual discharge from the penis or vagina which may smell unpleasant
  • Itches
  • Rashes
  • Lumps of blisters around the genitals or anus
  • Pain when passing urine
  • Pain and/or bleeding after sex
  • Pain in the testicles or lower tummy

STIs include syphilis, HIV, gonorrhoea, genital warts, chlamydia and genital herpes.

For information on chlamydia, chlamydia screening and how to get a chlamydia test – visit our Chlamydia pages.

For more information on STIs please visit NHS choices.

STI treatment

You can be tested for STIs at our sexual health clinics or a GP surgery if you are over 13 years old. Search for a sexual health clinic near you and find out what services they offer by clicking on Where to find us.

Useful links

Terrence Higgins Trust

National AIDS Trust

HIV/AIDS Alliance

NHS Choices