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Trichomonas vaginalis is a tiny, single-celled parasite and the main cause of non-viral STI trichomoniasis in both males and females.

Trichomonas vaginalis is a tiny, single-celled parasite and the main cause of the most prevalent non-viral sexually transmitted infection (STI) trichomoniasis in both males and females. It mainly spreads through unprotected penetrative sex (vaginal, anal), but it can also be spread through exchanging sex toys that haven't been properly cleaned. 

Many trichomoniasis sufferers don't show any symptoms, but when they do, they might range from moderate irritability to excruciating discomfort. Normal onset of symptoms is between 5 to 28 days after exposure, though they might occur later. 


Symptoms of Trichomoniasis in females include: 

  • Frothy, yellow-green, odorous vaginal discharge 
  • Discomfort while having sex and urinating 
  • Itching and irritation in the genital area 
  • Lower abdominal discomfort 

Symptoms of Trichomoniasis in men include: 

  • Discharge from the penis 
  • Burning after ejaculating or when urinating 
  • Penis-specific itchiness or irritation 


Trichomoniasis can raise the chance of contracting or transmitting other STIDs, and in pregnant women, it can result in an early delivery or a baby with low birth weight. 

A single dose of an antibiotic, frequently either metronidazole or tinidazole, is typically used to treat trichomoniasis. To prevent reinfection, all sexual partners should be treated at the same time. Consistent and proper condom use, mutual monogamy, and routine STI testing are all examples of preventive methods. Trichomoniasis can occur in people without showing any symptoms, making it simple for it to spread unintentionally, hence, regular STI testing is crucial for high-risk individuals. 


It is important to note that trichomoniasis might recur even after being successfully treated. About 1 in 5 patients relapse within three months of treatment, according to the United States Centers for Disease Control and Prevention. Routine STD testing can significantly enhance one's sexual health through early detection and treatment. It is also recommended to employ protective measures like the use of condoms during sexual interactions with your partner should you suspect re-infection. For any concerns or uncertainties, please consult with your doctor to ensure optimal sexual health and well-being. 


If you notice symptoms which might suggest trichomoniasis, it's important to consult with your healthcare provider promptly. Trichomoniasis is a sexually transmitted infection that requires medical diagnosis and treatment. Remember, your sexual health is a crucial part of your overall health and wellbeing, and there's no need to feel embarrassed or hesitant about seeking professional help. 


Centers for Disease Control and Prevention. (2021). Trichomoniasis - CDC Fact Sheet. 

Mayo Clinic. (2020). Trichomoniasis. 

American Sexual Health Association. (n.d.). Trichomoniasis. 

World Health Organization. Trichomoniasis.,10%25%20of%20men%20have%20urethritis. 


Please note that all medical articles featured on our website have been reviewed by qualified healthcare doctors. The articles are for general information only and are not medical opinions nor should the contents be used to replace the need for a personal consultation with a qualified medical professional on the reader's medical condition.

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