How long vaginitis lasts depends entirely on what’s causing it. A yeast infection typically clears within a week of treatment, bacterial vaginosis resolves in five to seven days on antibiotics, and trichomoniasis can be cured in as little as a single dose of medication. Irritant-related vaginitis often improves within days of removing the trigger. But without treatment, some forms of vaginitis can persist for weeks or months.
Yeast Infections: 3 to 7 Days With Treatment
Most uncomplicated yeast infections clear up with a short course of antifungal medication lasting three to seven days. These come as creams, suppositories, or tablets inserted vaginally. A single oral antifungal pill is another common option. Itching and burning often start improving within the first couple of days, though it’s important to finish the full course even if symptoms fade early. Stopping treatment too soon can leave enough yeast behind to trigger a rebound.
Without any treatment, mild yeast infections sometimes resolve on their own, but this can take significantly longer and symptoms may worsen in the meantime. Severe infections, or those caused by less common yeast strains, often require extended treatment. For resistant strains, a two-week course of vaginal boric acid capsules is a well-established option that works against species that don’t respond to standard antifungals.
Some people deal with yeast infections that keep coming back. The clinical threshold for “recurrent” is four or more episodes in a single year, or three episodes that aren’t triggered by antibiotic use. If that pattern fits you, a longer prevention strategy may be needed. Maintenance boric acid protocols, for instance, run six to twelve months with twice-weekly use after the initial infection clears.
Bacterial Vaginosis: 5 to 7 Days on Antibiotics
Bacterial vaginosis (BV) is the most common cause of vaginitis in reproductive-age women. It happens when the balance of bacteria in the vagina shifts, with protective bacteria declining and other species overgrowing. The hallmark symptoms are a thin, milky discharge and a fishy odor.
Standard antibiotic treatment runs five to seven days, either as oral pills or a vaginal gel. Symptoms usually improve noticeably within the first few days. However, BV has a frustratingly high recurrence rate. Roughly half of women who are successfully treated will experience another episode within twelve months. This isn’t necessarily a treatment failure; BV tends to recur because the underlying bacterial balance is difficult to restore permanently.
Research on what happens to the vaginal microbiome during and after antibiotic treatment paints a complicated picture. A 2025 study published in the journal mSystems tracked bacterial populations before, during, and after a standard course of antibiotics. During the first four days of treatment, the harmful bacteria decreased while protective lactobacilli increased. But after treatment ended, those protective bacteria declined again, often returning to levels similar to before treatment. None of the participants in that study achieved the fully protective, lactobacillus-dominant microbiome that characterizes a healthy vaginal environment. This helps explain why BV so often comes back.
Trichomoniasis: Curable in 1 to 7 Days
Trichomoniasis is a sexually transmitted infection caused by a parasite, and it responds well to antibiotics. Two treatment approaches are common: a single large dose taken all at once, or a seven-day course of smaller doses taken twice daily. Both produce high cure rates, ranging from 84% to 100% depending on the regimen.
The seven-day course is more effective, particularly for women with noticeable symptoms. One clinical trial found that the multi-day regimen cut the rate of persistent infection in half compared to the single-dose approach. Symptoms like discharge, irritation, and odor typically resolve within a week of starting treatment. You should avoid sexual contact until treatment is complete and your partner has been treated as well, since reinfection is common otherwise.
Atrophic Vaginitis: Weeks to Months
Atrophic vaginitis is different from the other types because it isn’t caused by an infection. It results from declining estrogen levels, most commonly during and after menopause, which causes vaginal tissue to become thinner, drier, and more easily irritated. Symptoms include dryness, burning, and discomfort during sex.
Because the underlying cause is hormonal rather than microbial, atrophic vaginitis doesn’t resolve on its own and doesn’t respond to antibiotics or antifungals. The primary treatment is vaginal estrogen, available as creams, suppositories, or tablets. Most regimens start with daily use for one to three weeks, then taper to two or three times per week as maintenance. Meaningful symptom improvement generally takes several weeks, and many women need to continue treatment long-term to keep symptoms from returning. Without ongoing therapy, the tissue changes and discomfort will typically come back.
Irritant Vaginitis: Days After Removing the Trigger
Vaginitis caused by chemical irritants or allergens, such as scented soaps, douches, laundry detergents, latex, or spermicides, typically resolves on its own once you stop using the offending product. The timeline is usually a matter of days, though it depends on how inflamed the tissue has become. Mild irritation may clear in two to three days, while more significant reactions can take a week or longer for complete relief.
The tricky part is identifying which product is responsible. If you’ve recently changed brands of detergent, body wash, or feminine care products, switching back or eliminating the new product is a good starting point. Wearing breathable cotton underwear and avoiding anything scented near the vaginal area can speed recovery.
Why the Type of Vaginitis Matters
The symptoms of different types of vaginitis overlap enough that it’s easy to guess wrong about what you have. Yeast infections produce thick, white, clumpy discharge with intense itching. BV causes thinner, grayish discharge with a fishy smell. Trichomoniasis often produces greenish-yellow, frothy discharge with irritation. But these distinctions aren’t always clear-cut in practice.
Getting the wrong over-the-counter treatment doesn’t just waste time. Using antifungal cream for what turns out to be BV won’t help, and the delay gives the real infection more time to persist. If symptoms don’t improve within a few days of self-treatment, or if you’re dealing with recurrent episodes, getting tested is the fastest path to relief. A simple office visit can distinguish between the types and get you on the right treatment, which in most cases means your symptoms will be gone within a week.