The Most Common Curable STI Worldwide
Trichomoniasis affects millions globally but is often overlooked. It's easily treated with antibiotics but frequently goes undiagnosed. Testing is the only way to know for sure.
Trichomoniasis (often called 'trich') is caused by a microscopic parasite called Trichomonas vaginalis. It's the most common curable STI worldwide, yet often goes undiagnosed because many people have no symptoms. Women are more commonly symptomatic than men. Without treatment, trichomoniasis can increase the risk of other STIs including HIV and cause complications during pregnancy.
Trichomoniasis is diagnosed through laboratory testing. In women, a vaginal swab is taken; in men, a urine sample is tested. NAAT/PCR testing is most sensitive. The parasite can also sometimes be seen under microscopy (wet prep). Because symptoms overlap with other conditions like bacterial vaginosis, accurate diagnosis is important for appropriate treatment.
Trichomoniasis is easily cured with antibiotics - either a single high dose or a week-long course of metronidazole or tinidazole. Avoid alcohol during treatment and for 48-72 hours after (causes severe nausea). ALL sexual partners must be treated simultaneously to prevent reinfection. Avoid sex until treatment is complete and symptoms resolved.
Trichomoniasis rarely clears without treatment and can persist for months or years. Even if symptoms improve or disappear, you may still be infected and able to transmit it. Treatment is simple and highly effective - there's no reason to leave it untreated.
The most common reason is reinfection from an untreated partner. Both/all partners must be treated at the same time. Less commonly, treatment failure can occur, requiring a higher dose or longer course. Ensure you complete treatment and avoid sex until your partner(s) have also completed theirs.
Yes, though it's less commonly diagnosed in men because most male infections are asymptomatic and the infection often clears spontaneously in men. However, during this time men can transmit it to partners. Male partners of women with trichomoniasis should be treated regardless of symptoms or test results.
While not immediately dangerous, untreated trichomoniasis increases your risk of acquiring HIV, can cause pregnancy complications, and continues to spread to partners. It's also uncomfortable when symptomatic. The good news: a simple antibiotic course cures it completely.
Chlamydia can persist without symptoms for months or longer. Learn about silent infections, when to consider testing, and how to get discreet results in the UK.
Stinging when you pee but no UTI detected? Several causes are possible, including irritation or STIs. Learn when STI testing may help.
Worried an STI may affect your fertility? Understand the possible links, when testing may help, and how confidential STI testing can provide clarity.
Book a confidential consultation or STI test at our South Kensington clinic. Walk-in appointments available.
At STI Clinic, our GPs and nurses are highly trained in sexual health and general medicine. We are committed to delivering confidential, non-judgemental care in a safe and supportive environment.
Our clinicians are fully registered and regulated to practise in the United Kingdom. We adhere strictly to national clinical standards and professional guidelines because patient safety, governance, and trust are non-negotiable.
Providing rapid and reliable sexual health diagnostics with dual-access pathways. Located in central London, we offer a professional environment with immediate walk-in care or pre-scheduled bookings.
Real reviews from our South Kensington clinic. We take pride in our professional medical staff and rapid diagnostic turnaround.
"Absolutely fantastic service. I was very nervous about the blood draw, but Nurse Luciana was so professional and gentle. She made the whole process painless. Results came back via secure email in 24 hours. Best clinic in South Kensington."
"Discreet, professional, and efficient. I walked in for an STI screening and was seen almost immediately. Luciana is an expert - she handled the blood test perfectly. Total peace of mind."
"High-quality clinical environment. Nurse Luciana is an absolute star; she explained everything clearly and made me feel at ease during the blood tests. 5-star care."