Chlamydia Fact File

Published on: 20 February, 2025
Updated at: 28 February, 2025
Chlamydia Fact File

Chlamydia is a common sexually transmitted infection (STI) that often goes unnoticed due to its lack of symptoms. Understanding this infection is crucial for maintaining sexual health and preventing potential complications. This factfile provides comprehensive information on chlamydia, including its symptoms, treatment options, prevention strategies, possible complications, and considerations during pregnancy. However, if you are concerned that you may have any type of STI, it's best to head to the NHS website or contact a professional medical nurse/doctor. 

 

What is Chlamydia?

Chlamydia is an STI caused by the bacterium Chlamydia trachomatis. It's one of the most prevalent STIs in the UK, particularly among sexually active individuals under 25. The infection is primarily transmitted through unprotected vaginal or oral sex. It's important to note that chlamydia can be asymptomatic, meaning many individuals may carry and transmit the infection without being aware of it.

According to the UK Health Security Agency, chlamydia across all ages totaled at 194,970 diagnoses in 2023 which is a 0.37% increase from 2022. 

 

Chlamydia Symptoms

While chlamydia often presents without symptoms, when they do occur, they can vary between men and women.

 

Symptoms in Women

In women, chlamydia can affect the cervix, urethra, and occasionally the throat. Common symptoms include:

  • Unusual Vaginal Discharge: A change in the colour, consistency, or smell of vaginal discharge.
  • Pain During Urination: A burning or stinging sensation when passing urine.
  • Lower Abdominal Pain: Discomfort or pain in the lower stomach area.
  • Pain During Sexual Intercourse: Discomfort or pain during or after sex.
  • Bleeding Between Periods or After Sex: Unexpected vaginal bleeding not associated with a menstrual period.

It's estimated that around 70% of women with chlamydia do not experience any symptoms, which underscores the importance of regular screening, especially for those with new or multiple sexual partners.

 

Symptoms in Men

In men, chlamydia can infect the urethra and throat. Common symptoms include:

  • Discharge from the Penis: Unusual white, cloudy, or watery discharge from the tip of the penis.
  • Pain During Urination: A burning or stinging sensation when urinating.
  • Testicular Pain: Discomfort or pain in the testicles, sometimes accompanied by swelling.

Approximately 50% of men with chlamydia are asymptomatic, making regular testing crucial for sexually active individuals.

 

Treatment for Chlamydia

Chlamydia is typically treated with a course of antibiotics. The most commonly prescribed medications include:

  • Doxycycline: Taken twice daily for seven days.
  • Azithromycin: A single, larger dose taken once.

It's essential to complete the full course of treatment, even if symptoms disappear, to ensure the infection is fully eradicated. During treatment, individuals should abstain from sexual activity to prevent spreading the infection. Additionally, recent sexual partners should be informed, tested, and treated if necessary to prevent reinfection.

 

How to Avoid Getting and Spreading Chlamydia

Preventing chlamydia involves adopting safe sexual practices and regular testing. Here are some effective strategies:

  • Use Condoms: Consistently using condoms during vaginal and oral sex significantly reduces the risk of transmission.
  • Regular Screening: Regular STI screenings are crucial, especially for individuals under 25 or those with new or multiple sexual partners. Early detection allows for prompt treatment and reduces the risk of complications.
  • Limit Number of Sexual Partners: Reducing the number of sexual partners can decrease the likelihood of exposure to STIs.
  • Avoid Sharing Sex Toys: If sharing, ensure they are thoroughly cleaned before each use.

Education and open communication with sexual partners about STI status and safe practices are also vital components of prevention.

 

Complications of Chlamydia 

If left untreated, chlamydia can lead to serious health complications.

In Women

  • Pelvic Inflammatory Disease (PID): An infection of the upper reproductive organs, which can cause chronic pelvic pain, damage to the fallopian tubes, and infertility.
  • Ectopic Pregnancy: A potentially life-threatening condition where a fertilised egg implants outside the womb, often in a damaged fallopian tube.

In Men

  • Epididymitis: Inflammation of the epididymis, leading to testicular pain and swelling, and in rare cases, reduced fertility.

Early detection and treatment are key to preventing these complications.

 

Remember to Stay Safe

Chlamydia is a common but often silent infection that can have serious health consequences if left untreated. Regular screening, safe sexual practices, and prompt treatment are essential to manage and prevent the spread of chlamydia. If you suspect you may have been exposed to chlamydia or are experiencing symptoms, seek medical advice promptly. Remember, maintaining open communication with sexual partners and healthcare providers is key to ensuring sexual health and well-being.

For more information and resources, visit the NHS website on chlamydia.

Read more: Guide to Condoms

 

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