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Chlamydia

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Introduction
Chlamydia is one of the most common sexually transmitted infections (STIs) in the UK.
Symptoms of chlamydia
Most people who have chlamydia don’t notice any symptoms. If you do get signs and symptoms, these usually appear between one and three weeks after having unprotected sex.
Causes of chlamydia
Chlamydia is caused by bacteria called Chlamydia trachomatis. Chlamydia is a sexually transmitted infection (STI), which means that you get it through having unprotected sex.
Diagnosing chlamydia
The only way to find out if you have chlamydia is to get tested. You can get tested whether or not you have symptoms.
Treating chlamydia
Chlamydia is usually treated with antibiotics. Antibiotics are very effective for treating chlamydia.
Complications of chlamydia
Read about complications of chlamydia, for example pelvic inflammatory disease in women and urethritis in men.
Preventing chlamydia
There are several ways to protect yourself against chlamydia and most other sexually transmitted infections (STIs), such as genital herpes and gonorrhoea.
'I thought I'd never have a baby'
Read Sally's story about how she discovered she had chlamydia when she was 16. She describes her symptoms and how she was diagnosed and treated.
'Nobody could work out what was wrong with me'
Read the real story of Julie Dawson, who was diagnosed with chlamydia when she was 18. It had developed into advanced pelvic inflammatory disease (PID).
See what the doctor sees with Map of Medicine
See what your doctor sees, find out what is happening with your Chlamydia treatment and what the next steps might be.