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Chlamydia is one of the most common types STIs in the UK and is easily treated. Often Chlamydia has no symptoms but can cause serious complications if left untreated.


  • Burning when peeing
  • Unusual discharge from the vagina, penis or anus
  • Symptoms for people with a vagina – lower tummy pain, bleeding after sex and / or bleeding between periods
  • Symptoms for people with a penis – testicle pain and / or swelling

Chlamydia is the most common STIs in the UK and is easily treated with antibiotic tablets. Often Chlamydia has no symptoms, but it can cause serious problems such as infertility if left untreated.

You cannot catch Chlamydia from kissing, hugging, sitting on toilet seats, sharing towels, cups, plates or cutlery, or from baths or swimming pools.

You can get Chlamydia by having sex (vaginal, anal, and oral, or by sharing sex toys) with someone who has the infection. If you are using and sharing sex toys, play it safe and place condoms and water-based lube on them.

Download our patient leaflet for more information.