Trichomoniasis: Symptoms, Testing, Treatment & Partner Care

Trichomoniasis, often called “trich,” is a common sexually transmitted infection caused by a parasite. It can affect people of any gender, and many people who have it do not notice symptoms.

When symptoms do occur, they can include changes in vaginal discharge, odor, itching, burning, discomfort during sex, or burning when urinating. These symptoms can look similar to bacterial vaginosis, a yeast infection, a urinary tract infection, or other sexually transmitted infections. That is why testing is the only reliable way to know whether trichomoniasis is the cause.

The good news is that trichomoniasis is treatable with prescription medication. Getting tested, completing treatment, and making sure sexual partners receive care are important steps in preventing reinfection and protecting your sexual health.

What Is Trichomoniasis?

Trichomoniasis is a sexually transmitted infection caused by a parasite called Trichomonas vaginalis. It can infect the vagina, vulva, urethra, penis, or other areas involved in sexual contact.

Trichomoniasis is different from bacterial vaginosis and vaginal yeast infections. Bacterial vaginosis is related to a change in vaginal bacteria, while yeast infections are caused by an overgrowth of yeast. Trichomoniasis is an STI and requires specific testing and prescription treatment.

Because many people do not have symptoms, someone may have trichomoniasis and pass it to a partner without knowing it. Testing is important when symptoms are present, after a possible exposure, or when a sexual partner has been diagnosed with trichomoniasis.

How Does Trichomoniasis Spread?

Trichomoniasis is most commonly passed through sexual contact with someone who has the infection. A person can spread trichomoniasis even if they do not have symptoms.

Because trichomoniasis is transmitted through sexual contact, a diagnosis does not determine when the infection was acquired or which partner passed it. Symptoms can appear at different times, and many people never develop noticeable symptoms.

If you are diagnosed with trichomoniasis, it is important to let current sexual partners know so they can be evaluated and treated. This helps reduce the chance of passing the infection back and forth.

Trichomoniasis Symptoms

Symptoms of trichomoniasis can vary. Some people have mild irritation, while others have more noticeable changes in discharge or discomfort. Symptoms may appear soon after infection, later on, or not at all.

Possible symptoms in people with a vagina

• Thin, watery, or foamy vaginal discharge
• Clear, white, yellow, or green vaginal discharge
• Unusual or unpleasant vaginal odor
• Vaginal or vulvar itching, burning, redness, or soreness
• Burning or discomfort during urination
• Pain or discomfort during sex
• Lower abdominal or pelvic discomfort

Possible symptoms in people with a penis

• Irritation or itching inside the penis
• Burning after urination or ejaculation
• Discharge from the penis
• Discomfort around the urethra

Symptoms can overlap with other vaginal, urinary, and sexually transmitted conditions. Do not rely on discharge color, odor, or itching alone to determine whether you have trichomoniasis.

Can You Have Trichomoniasis Without Symptoms?

Yes. Many people with trichomoniasis do not have noticeable symptoms. This is one reason the infection can spread without someone realizing it.

Even without symptoms, a person may still pass trichomoniasis to a sexual partner. If a current or recent partner has been diagnosed with trichomoniasis, it is important to speak with a healthcare provider about testing and treatment, even if you feel completely well.

If you have a new sexual partner, more than one sexual partner, possible STI exposure, or symptoms that could be related to an infection, STI testing can help you make informed decisions about your care.

Trichomoniasis vs. BV and Yeast Infections

Trichomoniasis, bacterial vaginosis, and vaginal yeast infections can all cause vaginal discomfort or changes in discharge. However, they have different causes and need different treatments.

Feature	Trichomoniasis	Bacterial Vaginosis	Vaginal Yeast Infection
Type of condition	Sexually transmitted infection caused by a parasite	Change in the balance of vaginal bacteria	Overgrowth of yeast
Possible discharge	May be thin, increased, foamy, clear, white, yellow, or green	Often thin, white, gray, or slightly green	Often thick, white, or clumpy
Odor	May cause an unusual or unpleasant odor	May cause a noticeable fishy odor	Usually does not cause a strong odor
Itching or burning	May occur	May occur but can be mild or absent	Often common and may be intense
Typical treatment	Prescription oral medication and partner treatment	Prescription antibiotic medication	Antifungal medication

These patterns can be useful, but they cannot confirm a diagnosis. A healthcare provider may recommend testing to identify the cause of your symptoms.

Learn more about bacterial vaginosis vs. yeast infections.

How Is Trichomoniasis Tested?

Trichomoniasis cannot be diagnosed based on symptoms alone. Testing is needed to confirm whether the parasite is present.

Depending on your symptoms and anatomy, a healthcare provider may collect a vaginal swab, cervical swab, urine sample, or another appropriate sample for laboratory testing. The best test can vary based on your individual situation.

Your provider may also recommend testing for other sexually transmitted infections. This may be especially important if you have a new partner, multiple partners, possible exposure to an STI, pelvic pain, sores, unusual bleeding, or other symptoms.

Testing is an important part of receiving the right treatment. Antifungal medication for a yeast infection will not treat trichomoniasis, and treatment for bacterial vaginosis may not be the right treatment for trichomoniasis.

How Is Trichomoniasis Treated?

Trichomoniasis is treated with prescription oral medication. A healthcare provider will recommend the treatment option that is most appropriate for you based on your health history, current medications, pregnancy status, allergies, and other individual needs.

It is important to take medication exactly as prescribed. Do not share medication, use leftover medication, or stop treatment early without guidance from a healthcare provider.

Avoid sexual contact until you and your sexual partner or partners have completed treatment and any symptoms have resolved. This helps lower the chance of reinfection and prevents passing the infection to others.

If you are pregnant, think you may be pregnant, are breastfeeding, or take other medications, let your healthcare provider know before starting treatment.

Why Partner Care Matters

Partner care is a key part of trichomoniasis treatment. If only one person is treated, the infection may be passed back and forth between partners. A partner may have no symptoms but still carry and transmit the parasite.

Current sexual partners should be informed, evaluated, and treated according to a healthcare provider’s recommendations. This applies even if a partner feels well and has no symptoms.

To reduce the chance of reinfection:

• Tell current sexual partner or partners about the diagnosis.
• Make sure partners receive appropriate medical evaluation and treatment.
• Avoid sexual contact until treatment has been completed and symptoms have resolved.
• Use condoms consistently after treatment as part of an ongoing sexual-health plan.
• Follow your healthcare provider’s advice about follow-up testing.

Should You Get Retested?

Reinfection can happen if a sexual partner was not treated or if you are exposed again after treatment. For this reason, follow-up testing may be recommended, especially for sexually active people with a vagina.

Your healthcare provider can tell you whether retesting is appropriate for your situation and when it should be done. If symptoms return after treatment, schedule a consultation rather than assuming it is the same condition or using leftover medication.

Returning symptoms may be related to reinfection, incomplete treatment, another STI, bacterial vaginosis, a yeast infection, vaginal irritation, or another concern that needs evaluation.

When to See a Healthcare Provider

Schedule a consultation if you have unusual vaginal discharge, odor, itching, burning, discomfort during sex, burning with urination, penile discharge, or possible exposure to an STI.

Seek medical care promptly if you have:

• Pelvic pain, lower abdominal pain, or severe genital pain
• Fever, chills, nausea, or vomiting
• Vaginal or genital sores, blisters, a rash, or significant swelling
• Unexpected vaginal bleeding or bleeding after sex
• Symptoms during pregnancy
• A partner who has been diagnosed with trichomoniasis or another STI
• Symptoms that do not improve or return after treatment

Getting tested is a proactive step. Trichomoniasis is treatable, and a diagnosis can help you receive the appropriate medication and prevent reinfection.

How to Help Prevent Trichomoniasis

The only way to completely avoid sexually transmitted infections is to avoid sexual contact. For people who are sexually active, there are practical ways to reduce the risk of trichomoniasis and other STIs.

• Use condoms consistently and correctly during vaginal, anal, and oral sex.
• Talk openly with partners about STI testing and sexual health.
• Consider STI testing with new partners or after possible exposure.
• Limit the number of sexual partners when that fits your personal circumstances.
• Avoid sexual contact when you or a partner has symptoms that may be related to an STI.
• Complete all prescribed treatment and make sure current partners receive care if trichomoniasis is diagnosed.

Confidential Trichomoniasis Testing and Care

Trichomoniasis is common, treatable, and often difficult to identify based on symptoms alone. Vaginal odor, discharge, itching, burning, painful urination, and discomfort during sex can have several possible causes.

Clínica Cabrera provides confidential care for sexual health concerns, including testing, treatment guidance, and support for partner care. Schedule a consultation to discuss your symptoms, possible exposure, or testing needs.