No — trichomoniasis does not reliably go away on its own. It's caused by a parasite that can live in the genital tract for months or years without treatment, so waiting it out usually means a persistent infection that you can keep passing to partners. A short, specific course of prescription medication clears it in most people CDC.
with the right treatment
testing, not symptoms, decides
| Item | Value |
|---|---|
| Curable? | yes — with the right treatment |
| Tested by | NAAT / lab |
| Often | no symptoms |
| If you may have it | get tested — testing, not symptoms, decides |
Is trichomoniasis curable, or do you have to manage it forever?
Trichomoniasis is curable. It's the most common curable non-viral STI in the US, with an estimated 2.6 million infections US prevalence, 2018. That puts it in a different category from viral infections like herpes or HIV, which the body can't clear and which medicine controls rather than eliminates. Treat it properly and the antibiotic kills the parasite; once it's gone, it stays gone unless you're reinfected.
Everything turns on the word "properly." The parasite, Trichomonas vaginalis, is a single-celled organism that colonizes the vagina, urethra, and lower genital tract, and your immune system doesn't dependably evict it. People assume trich behaves like a minor yeast infection or a passing irritation that resolves once symptoms quiet down. Symptom relief and cure are two different things here.
What "cure" actually means with trichomoniasis
Cure means the parasite is no longer detectable in your body, not just that you feel better. Trich is a living organism, so being cured means it's been killed off entirely. A clinician aims to settle your symptoms and clear the infection so you can't transmit it and the long-term risks disappear.
This matters because trich is frequently silent. Many people, especially men, carry it with no symptoms at all, so "I feel fine" tells you nothing about whether the parasite is still there. The only way to know you're cleared is a finished, correct course of medication plus, when appropriate, a follow-up test.
The treatment that clears it
Trichomoniasis is treated with a nitroimidazole antibiotic — metronidazole or, as an alternative, tinidazole. These drugs are toxic to the parasite and reliably wipe it out when taken as prescribed. The exact regimen depends on whether you're a woman or a man, because the evidence diverged for the two groups.
| Who | Recommended regimen | Alternative |
|---|---|---|
| Women | Metronidazole 500 mg orally twice daily for 7 days | Tinidazole 2 g orally, single dose |
| Men | Metronidazole 2 g orally, single dose | Tinidazole 2 g orally, single dose |
The 2021 CDC guidelines moved women off the old single 2 g dose to the multi-day course after a randomized trial found about 19% of women given the single dose were still infected at follow-up, versus 11% on the 7-day course Muzny et al.. The longer course roughly halved the chance of a positive retest, so it became the preferred option for women CDC STI Tx Guidelines, 2021. Men still do well with the single dose.
Two rules make or break the treatment. Skip alcohol during the course and for a short time after — combining these antibiotics with alcohol can trigger a disulfiram-like reaction (flushing, nausea, vomiting, a racing heart). Your sex partners also need treating at the same time, even if they have no symptoms, or you'll just pass it back and forth. For the full breakdown of dosing, side effects, and what to do if it doesn't work the first time, see our guide to trichomoniasis treatment.
In practice, treatment is a defined course of pills, not an open-ended prescription. Finish every dose even after you feel normal, and ask the clinician whether your partner can be treated at the same visit or with a prescription to take home.
Why fading symptoms don't mean you're cured
Trich symptoms — frothy or off-color discharge, genital itching, burning with urination, discomfort during sex — can ease up on their own for stretches of time. That ebb and flow fools a lot of people into thinking the infection cleared itself, but the parasite is still living and reproducing in the genital tract, just not irritating the tissue enough at that moment to register.
An untreated infection that quiets down is still a transmissible infection. You can pass it to every partner during a symptom-free stretch, and the parasite keeps you exposed to the longer-term harms below. Letting symptoms be your guide is the most common mistake people make with trich.
Do you need a follow-up test after treatment?
For sexually active women, yes — retest about three months after treatment. Reinfection is common, often from an untreated partner. This isn't because the medication failed; trich is just easy to catch again. Retesting at the three-month mark catches a fresh infection before it has months to do damage or spread.
If symptoms come back sooner, or never fully went away, don't wait for the three-month window — get checked. Persistent or recurring symptoms can mean reinfection or, less often, that the parasite didn't respond to the first regimen, which changes how a clinician treats it next. Learn what the diagnostic process involves in our overview of trichomoniasis testing & diagnosis.
What happens if you leave trichomoniasis untreated
Because trich won't self-resolve, leaving it alone lets the consequences build. The biggest one for everyone is that it raises your risk of getting or spreading other STIs, including HIV. The inflammation it causes in the genital lining makes it easier for other pathogens to get a foothold, so an untreated trich infection opens the door to worse problems.
Trich also lands disproportionately on women, who account for more than 80% of cases, and the stakes are higher in pregnancy. Untreated trichomoniasis during pregnancy increases the chance of preterm birth (delivering early) and low birth weight (a baby born smaller than expected), both of which carry health risks for the newborn. If you're pregnant or trying to conceive, read our guide to trichomoniasis in pregnancy and bring it up with your prenatal provider.
When to see a clinician
Get evaluated if you have any of the classic symptoms — unusual discharge, genital itching or soreness, or burning when you urinate — or if a partner tells you they tested positive. Because so many infections are silent, screening matters too: if you're in an at-risk group or have a new or multiple partners, ask to be tested even without symptoms. If you're unsure how soon a test will pick up an exposure, our explainer on when to test after exposure walks through the timing.
Testing itself is straightforward and low-stress. Most cases are diagnosed from a simple sample — a urine cup, a self-collected swab, or a quick exam — with results usually back in a few days, and it's free or low-cost at health departments, Planned Parenthood, and Title X clinics. You can also get tested through an at-home or online option and compare testing providers on price and turnaround. A trich diagnosis is common and routine. Clinics handle it every day, and it says nothing about you as a person.