Why Do I Keep Getting Yeast Infections?

For most women, a yeast infection is an annoying but one-time event. For roughly 8 percent of women, it's a monthly visitor that keeps coming back no matter how many tubes of Monistat or fluconazole tablets they've used. That pattern — four or more episodes within a 12-month window — has a formal name: recurrent vulvovaginal candidiasis, or RVVC. And while RVVC is often treated like a minor nuisance, the research tells a different story: it meaningfully affects quality of life, relationships, and mental health, and it usually signals something treatable that standard single-dose therapy doesn't address.

What "Recurrent" Actually Means

The CDC's STI Treatment Guidelines define RVVC as four or more confirmed episodes of symptomatic candidiasis in 12 months. The key word is confirmed. A 2011 study in Obstetrics & Gynecology famously found that only about one in three women who self-diagnosed a yeast infection actually had one. If you're treating yourself repeatedly based on symptoms alone, you may not be treating the right thing — which itself is a major driver of what feels like "recurrent yeast."

Reason 1: It Isn't Actually Yeast

The most common explanation for "recurrent yeast infections that never quite go away" is a different diagnosis. Conditions that mimic yeast include:

• Bacterial vaginosis (BV) — thin, fishy-smelling discharge; treated with metronidazole, not antifungals. See our yeast vs BV guide.
• Trichomoniasis — a sexually transmitted parasite; frothy discharge and itching
• Contact dermatitis — reactions to soaps, detergents, panty liners, or even the preservatives in OTC yeast creams
• Lichen sclerosus — a chronic skin condition that causes itching and white patches on the vulva
• Atrophic vaginitis — estrogen deficiency changes that cause irritation, especially after menopause or while breastfeeding

A proper diagnosis requires a microscopic look at the discharge or a vaginal PCR panel. If you have never had a confirmed diagnosis, that's the first step.

Reason 2: You Have True Recurrence — Now What's Driving It?

If cultures or PCR have repeatedly confirmed Candida, the next question is why your vaginal ecosystem keeps letting the yeast bloom. The evidence points to several consistent drivers.

Non-albicans Candida species

About 90 percent of typical yeast infections are caused by Candida albicans. But roughly 10 to 15 percent of recurrent cases are caused by non-albicans species — most commonly C. glabrata. These species are often resistant to standard fluconazole, which is why repeated doses don't work. Treatment requires boric acid vaginal suppositories (600 mg nightly for 14 days) or compounded alternatives; over-the-counter antifungals won't touch them.

Undiagnosed or poorly controlled diabetes

Elevated glucose in vaginal secretions is essentially food for yeast. A fasting blood glucose or HbA1c test is part of any proper recurrent-yeast workup. If you've had more than three episodes in a year, get it checked — many women discover pre-diabetes this way.

Recent or frequent antibiotic use

Antibiotics wipe out Lactobacillus species that keep the vaginal pH acidic and inhospitable to Candida. A single course of broad-spectrum antibiotics can trigger a yeast flare in susceptible women. If you're in a cycle of treating UTIs with antibiotics and then developing yeast, ask a clinician about antifungal prophylaxis during UTI treatment.

Hormonal factors

Estrogen increases vaginal glycogen, which Candida feeds on. Higher-dose combined oral contraceptives, pregnancy, and hormone replacement therapy can all predispose you to recurrence. The luteal phase of the menstrual cycle (the week before your period) is also a common trigger window.

Immune factors

HIV, chemotherapy, long-term systemic corticosteroids, and rare conditions like chronic mucocutaneous candidiasis all predispose to recurrence. Most women with RVVC have normal immune function, but a full review is warranted if other unusual infections are occurring.

Your partner — sometimes

Routine treatment of male partners is not recommended by current guidelines because the data doesn't support it for most women. That said, if your male partner has symptoms (balanitis, itching under the foreskin) or if you have a female partner who also has recurrent symptoms, partner treatment can be worth trying.

What Actually Works: The Evidence

The CDC-recommended induction-plus-maintenance protocol

Standard of care for RVVC remains what a landmark 2004 NEJM trial established and the CDC endorses:

• Induction: fluconazole 150 mg orally every 72 hours for 3 doses (days 1, 4, and 7)
• Maintenance: fluconazole 150 mg orally once weekly for 6 months

In the original trial, this regimen suppressed recurrence in over 90 percent of women during maintenance. About half remained symptom-free for a year after stopping, though many needed a second round. For context on how quickly a single dose works in an acute infection, see our fluconazole timeline guide.

Newer option: oteseconazole (Vivjoa)

FDA-approved in 2022, oteseconazole is a highly selective azole designed specifically for RVVC in post-menopausal women or women not of reproductive potential (it has embryotoxic effects). Phase III data in Lancet Infectious Diseases showed approximately 93 percent of treated women remained recurrence-free at 48 weeks, compared with about 57 percent on placebo.

Boric acid for resistant or non-albicans species

Boric acid 600 mg vaginal suppositories nightly for 14 days remains the evidence-based option for C. glabrata and fluconazole-resistant cases. It is not for oral use and is contraindicated in pregnancy, but for the right patient it is highly effective.

Probiotics — mixed evidence

Specific strains (Lactobacillus rhamnosus GR-1, L. reuteri RC-14) have modest supportive evidence for preventing recurrence when combined with standard antifungal therapy. They're not a substitute for treatment, but they're low-risk as an adjunct.

"Weekly fluconazole maintenance therapy reduced the recurrence rate of vulvovaginal candidiasis from 64 percent to 9 percent over 6 months."— Sobel et al., New England Journal of Medicine, 2004

What Doesn't Work (Despite What the Internet Says)

• Yogurt applied vaginally — food-grade yogurt contains the wrong Lactobacillus strains and unwanted sugars
• Tea tree oil and essential oils — frequent cause of contact dermatitis that mimics yeast and perpetuates the cycle
• Douching — disrupts the microbiome and actually increases recurrence
• Drastic sugar-elimination diets — no good evidence unless you have diabetes
• OTC antifungal creams on repeat — if three cream courses in a year didn't work, the next one probably won't either

When to Escalate

See a clinician — ideally one who can order vaginal cultures or PCR and screen for underlying drivers — if any of the following apply:

• Four or more episodes in 12 months
• Symptoms that don't resolve fully within 7 to 14 days of proper antifungal treatment
• Bleeding, ulceration, or persistent white patches on the vulva
• You've never had a confirmed diagnosis
• You're pregnant, diabetic, or immunocompromised

Related reading on Bidwell:

• Yeast infections: separating myth from science
• How long does fluconazole take to work?
• Yeast infection or BV? How to tell the difference