Chlamydia
Chlamydia is one of the most common sexually transmitted infections. It often has no symptoms, but it is easy to test for and is treated with antibiotics. Free, confidential testing is available.
- Updated August 2026
- Clinical review pending
- 1 source
At a glance
- Chlamydia is common and often has no symptoms.
- Free, confidential testing is available, including home test options.
- It is easily treated with antibiotics.
On this page (5 sections)
Overview
Chlamydia is one of the most common sexually transmitted infections (STIs) in the UK. It is passed on through sex without a condom. Testing and treatment are straightforward [1].
Symptoms
Most people with chlamydia have no symptoms at all. When symptoms do occur, they can include unusual discharge, pain when peeing, and — depending on the person — bleeding between periods or pain in the testicles [1].
Testing
Chlamydia is easy to test for, and testing is free and confidential. You can get tested at a sexual health clinic or your GP, and free home test kits are available, including dedicated services for people under 25 [1].
Treatment and prevention
Chlamydia is treated with antibiotics. It is important that recent sexual partners are also tested and treated. Using condoms helps protect against chlamydia and other STIs, and regular testing is recommended, especially with a new partner [1].
When to get tested
Get tested if you think you might have chlamydia or another STI, if a partner has been diagnosed, or as a regular check-up if you are sexually active — even if you feel well [1].
Sources
- NHS. Chlamydia (opens in new tab) Last reviewed 24 October 2024. Accessed 12 August 2026.
About this page
- Written by
- Consumer Health editorial team
- Medical review
- Pending — this page has not yet been reviewed by a named clinician. Read our medical review policy.
- Last updated
- August 2026
- Next review due
- August 2027
Important: This information is for general guidance only and does not replace professional medical advice. It is not intended to diagnose or treat any condition. Always speak to a qualified healthcare professional — such as your GP or pharmacist — for advice about your individual circumstances, and do not start, stop or change any prescribed treatment based only on this page. If you think you are having a medical emergency, call 999. Consumer Health is an independent health-information resource and is not the NHS or a government body.
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