city_hall

Official websites use .boston.gov

A .boston.gov website belongs to an official government organization in the City of Boston.

lock

Secure .gov websites use HTTPS

A lock or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Trichomoniasis

Learn about trichomoniasis and find information on symptoms, testing, and more.

Trichomoniasis is a sexually transmitted infection (STI) caused by a parasite. Trichomoniasis can affect people of all genders and sexual orientations, but is more common in people with vaginas. You can treat and cure trichomoniasis by taking medication as prescribed.

Contact the Mayor’s Health Line for free, confidential, multilingual health information and referral services at 617-534-5050. The Mayor’s Health Line helps all residents regardless of immigration status or gender identity.

How to Prevent Trichomoniasis

Trichomoniasis spreads during sex and the parasite usually spreads from a penis to a vagina, or from a vagina to a penis. It can also spread from a vagina to another vagina. It is not common for the parasite to infect other body parts, like the hands, mouth, or anus. To help prevent trichomoniasis: 

  • Use a new barrier method every time (like a condom or dental dam) for each sexual act, partner, and when switching between oral, anal, or vaginal sex.

    • Condoms made from “natural” materials (such as lambskin) can help prevent pregnancy, but they do not protect against sexually transmitted infections (STIs). For STI protection, use latex, polyurethane, or polyisoprene condoms. Check the product label to confirm what type of condom you’re using.
  • Talk with your partner(s) about your and their STI status and about getting tested.
  • Get tested regularly: Some people with Trichomoniasis don’t have symptoms, which is why getting tested and knowing your status is important to stop the spread and get treatment if needed.

  • Practice good hygiene: Wash your hands often with soap and water for at least 20 seconds, follow cleaning instructions for toys and check for damage, and use condoms on toys. 

  • Understand that having sex while under the influence of drugs and/or alcohol can increase the likelihood of unprotected sex.

Testing

Testing is usually done using a fast and simple vaginal swab or urine sample. Early testing helps protect your health, prevent complications, and stop the infection from spreading to others. Getting tested and treated is especially important if you are trying or think you are pregnant because pregnant persons with trichomoniasis may have babies who are born early or with low birth weight.


Free or low cost and confidential testing is available in clinics throughout Boston.

Learn More

Treatment

You can treat trichomoniasis with medicine and cure your infection if you follow treatment as prescribed by a healthcare provider. Visit your healthcare provider again if you still have symptoms after you have taken your medicine.

Recent or regular sex partners should also seek testing and treatment if needed for trichomoniasis before having sex again. It is best for both you and your partner to get treatment at the same time to ensure the best health outcomes. It is important to know that you can get infected with trichomoniasis many times.

Symptoms

Most people do not have symptoms. The symptoms caused by trichomoniasis can increase the chances of getting other STIs such as HIV and chlamydia. To reduce this risk, get tested and use the prevention methods listed above. 

For those who do have symptoms, check out the information below.

For people with vaginas, symptoms can start 5 days after initial infection, but can take as long as 28 days to appear and can include:

  • Unusual or increased discharge (yellow-green) from her vagina with a strong smell
  • Pain or discomfort when she pees or during sex
  • Irritation or itching from her vagina
  • In more serious infections, pain in the lower stomach or back

Most people with penises do not have symptoms, but symptoms can include:

  • Mild discharge coming from the penis
  • Irritation inside the penis
  • Mild burning after he pees or ejaculates (releases semen)

How long can a person spread trichomoniasis?

A person can spread trichomoniasis to others from the time they get the infection until they are treated. A person can spread trichomoniasis to others even if they do not have symptoms. If you are taking medicine, do not have sex until you finish with your treatment and no longer have symptoms.

Back to top