Sexually transmitted infections

Worried about a sexual health issue? We offer free, confidential tests for and treatment of sexually transmitted infections (STIs) at the Clare Simpson Clinic (Barnet Hospital and Edgware Community Hospital) and the Marlborough Clinic (Royal Free Hospital).

Not all STIs have symptoms so it's always a good idea to get checked and stay safe.

Find out what our STI tests involve.

Common symptoms of STIs in women:

  • change in the colour, smell or amount of vaginal discharge
  • redness or itching
  • pelvic pain or pain when having sex
  • heavier periods
  • bleeding in between your periods, or after sex
  • needing to urinate frequently
  • discomfort when urinating
  • ulcers or sores
  • lumps on the skin
  • if you’ve been having anal sex, you may notice a change in bowel habit such as pain, constipation or diarrhoea, blood or mucus in your stools

Common symptoms of STIs in men:

  • discharge (fluid) coming from the tip of the penis
  • redness or itching
  • pain in the testicles
  • discomfort when urinating
  • needing to urinate frequently
  • ulcers or sores
  • lumps on the skin
  • if you’ve been having anal sex, you may notice a change in bowel habit such as pain, constipation or diarrhoea, blood or mucus in your stools

Common STIs

We offer tests for and treatment of all STIs and other genital infections at our clinics. Some of the infections we treat are listed below. Click on the links to be taken to an external website for further details.

If you are worried about sexually transmitted infections and oral sex, find out more about oral sex and STIs.