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Home / STIs / Trichomoniasis


Causes, symptoms and available treatments for trichomoniasis

Trichomoniasis is an STI caused by a parasite known as trichomonas vaginalis (TV). Over 65% of those infected show no visible symptoms. TV affects a man's urethra and prostate gland and a woman's urethra and vagina.

7.4 million cases of TV are treated every year. Fortunately, the condition can be cured with prescribed antibiotics available online from HealthExpress. More information can be found below.

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What is trichomoniasis?

Trichomoniasis is a sexually spread bacterial infection caused by the protozoan parasite trichomonas vaginalis. This means, unlike viral STIs, it can be cured completely if identified early enough and treated effectively. It is possible to transfer the infection to your partner(s) without revealing any of the symptoms, emphasising the importance of getting periodic sexual health testing if you're sexually active.

How common is trichomoniasis?

Despite not being as well-known as other bacterial STIs such as chlamydia and gonorrhoea, trichomoniasis is actually quite common. It can be spread just as easily as other STIs and can cause long-term health complications if not treated.

What causes trichomoniasis?

A tiny parasite called trichomonas vaginalis is responsible for the STI and it is thought that penetrative unprotected sex is the main cause. It is also possible to get the infection through the sharing of wet objects such as towels and sex toys as this allows the parasite to survive for longer. Oral and anal sex or sharing of cutlery and cups or are not known to cause the infection but it is advised in either case to practice safe sex through the use of a barrier contraceptive such as a condom.

Ensure you are tested regularly if you are sexually active to eliminate any long term risk caused by the STI. As trichomoniasis is a parasitic infection, it can be cured completely with antibiotics. This doesn't mean you won't get the infection again and it can pass onto others, regardless of whether symptoms are present.

  • weakened immune system
  • Sharing of sex toys with an infected partner

  • Feeling stressed
  • Unprotected sex with an infected person

What are the symptoms of trichomoniasis?

Symptoms of trichomoniasis

The issue with this infection is that many people don't show any symptoms at all. Less than half of those with the infection will get trichomoniasis symptoms, and these will usually appear between five days and a month after being infected, however it could take longer. It is more likely to experience the symptoms of trichomoniasis if you are female.

Symptoms in women

All symptoms of the usually affect the vagina and urethra. You may be experiencing one or many of the following:

  • Itching and redness around the vagina; Soreness and swelling
  • Itching around the thighs
  • Urge to urinate much more
  • Pain when passing urine
  • Pain during sex
  • Pain in the lower abdomen
  • Swelling of the groin
  • Strong/foul smell
  • Unusual discharge; Frothy, yellow or green in colour

Symptoms in men

For men, trichomoniasis symptoms are usually associated with the penis, urethra or prostate. Male symptoms of trichomoniasis may include one or more of the following:

  • Soreness and itching inside the penis or around the head
  • Urge to urinate frequently
  • Pain after urinating; usually a burning sensation
  • Pain after ejaculating; usually a burning sensation
  • Unusual discharge; thin white discharge
  • Swelling and redness around the head on the penis and foreskin

These symptoms can be similar to other STIs, so it is advised to get fully tested before buying trichomoniasis treatment. You can do this at your local sexual health clinic, or GUM clinic, that you can find when typing your postcode on the NHS sexual wellbeing section.

Practising safe sex is always a smart move, especially if you have a new partner or multiple sexual partners. Despite trichomoniasis not exposing any signs for the majority of people, you can be tested for it during your sexual health routine check-up, which is advised.

What are the additional benefits of treating trichomoniasis?

If you're experiencing symptoms of this STI, then treating trichomoniasis will get rid of any discomfort completely, which is a massive benefit in itself. However, if you have had an STI test that has come back positive for trichomoniasis then treating it may yield the following benefits:

  • Reduced risk of infertility
  • Treat symptoms and discomfort
  • Reduced risk of premature birth
  • Lessen chance of other sexual infections

Trichomoniasis can cause long-term problems when it isn't treated including increasing the likelihood of you contracting other STIs, including incurable infections such as HIV. In fact, not treating many sexually transmitted infections can increase the risk of getting HIV by three times.

How do I treat trichomoniasis?

Diagnosing trichomoniasis?

If you happen to be showing symptoms, trichomoniasis will be fairly easy to diagnose, however your doctor may still ask for a swab just to confirm fully. For women, this can include a pelvic exam and swab to collect a sample of fluids. This will be examined under a microscope for the trichomonas vaginalis parasite.

For men, diagnosing STIs is often difficult as it can be far more invasive than for women. The majority of the time, men will be treated for trichomoniasis if their sexual partner has the infection, or if a past sexual partner has been in contact with them suggesting they should get tested. If you do have symptoms, your doctor may take a swab of the discharge or soreness present to examine under the microscope.

You can get tested for trichomoniasis at your local sexual health clinic, GUM clinic or even online. Some GP surgeries may offer STI testing, however they may be reluctant so do check beforehand. If you do have symptoms, then the likelihood of them testing for trichomoniasis is higher than if you're asymptomatic.

Prescription treatment

Trichomoniasis will not go away by itself but fortunately is completely curable. A course of antibiotics, Metronidazole, will get rid of the infection and are usually taken for up to seven days, of which you must avoid sexual intercourse during this time as well as shunning alcohol, which can trigger side effects such as vomiting.

It's important to tell your sexual partner(s) as it will spread, and you will get it again if they are not treated.

How can I prevent trichomoniasis?

Even if you have received treatment for a trichomoniasis infection and are now in the clear, it does not mean that you are now immune to it or other STIs. In order to prevent becoming infected again by trichomoniasis or other STIs it is always advised to practice safe sex. This reduces the risks of you contracting or passing on an STI to a partner. Other ways to prevent this sexual infection include:

  • Use a condom when engaging in penetrative or oral sex
  • Avoid the sharing of sexual toys unless they are thoroughly cleaned or covered with a condom

What treatment options are available?

The only option available for trichomoniasis is prescription treatment in the form of a course of antibiotics called Metronidazole that will require a consultation in the UK. If you have been diagnosed with trichomoniasis then you can obtain medication online at HealthExpress, avoiding a face-to-face appointment at your doctors and wait times in the surgery and pharmacy.

If you order Metronidazole tablets before 4pm, you will receive your dosage the next day. This means you can rest assured your medication will arrive as soon as possible, making you fighting fit in no time.

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