A vaginal infection that clears and comes back again, and again, usually isn't just bad luck. The most common reasons are treating the wrong infection (bacterial vaginosis and a yeast infection need different medicines, and look similar), a partner who's part of the reinfection cycle without realising it, or everyday habits — intimate washes, tight synthetic underwear, douching — that keep disrupting the vaginal flora that normally keeps infections in check.
Bacterial vaginosis vs yeast infection: why they get confused
These are the two most common causes of recurring vaginal infections, and they're frequently mixed up because both can cause discharge and discomfort — but the cause, the discharge, and the treatment are all different:
- Bacterial vaginosis (BV) is an imbalance in the normal bacterial flora, not a single invading organism. It typically causes a thin, greyish-white discharge with a distinct fishy odour, often more noticeable after sex. It's treated with specific antibiotics (oral or vaginal), not antifungals.
- A yeast infection (candidiasis) is an overgrowth of yeast that's normally present in small amounts. It typically causes a thick, white, cottage-cheese-like discharge with itching and burning, usually without a strong odour. It's treated with antifungals, not antibiotics.
Using an antifungal cream repeatedly for what's actually recurring BV (or the reverse) won't work, and can make things worse — which is why a recurring infection is worth getting tested and confirmed each time, rather than reusing whatever worked last time.
Recurring doesn't always mean the same infection failed to clear. It can mean two different infections are being treated as if they were one.
Does my partner need treatment too?
This depends on which infection it is:
- For bacterial vaginosis, routine partner treatment isn't generally recommended for male partners, since BV is understood as an imbalance of the vagina's own flora rather than a sexually transmitted infection in the usual sense — though sexual activity can be a trigger for recurrence in some women.
- For yeast infections, partner treatment isn't routinely needed either, since yeast overgrowth is usually a local imbalance rather than something passed back and forth — but if a partner has symptoms (itching, redness), they should be seen and treated.
- For other causes of recurring discharge or irritation — some sexually transmitted infections can cause a similar pattern and do need partner treatment — which is one more reason a proper test, not a guess from symptoms, matters when an infection keeps returning.
Everyday habits that disrupt the vaginal flora
The vagina maintains its own protective bacterial balance (dominated by lactobacilli), and several common habits can disrupt it enough to trigger recurrence:
- Vaginal douching or internal washes strip out the protective bacteria along with everything else, and are a well-established trigger for both BV and yeast overgrowth — the vagina is self-cleaning and doesn't need internal washing
- Scented soaps, washes, or wipes used externally can irritate and alter the local environment even without douching internally
- Tight, synthetic underwear traps heat and moisture, which favours yeast overgrowth
- Antibiotic courses taken for unrelated reasons (a UTI, a chest infection) can wipe out protective vaginal bacteria along with the target infection, which is a common trigger for a yeast infection right after a course of antibiotics
- Uncontrolled blood sugar, in women with diabetes or prediabetes, raises the chance of recurring yeast infections specifically
What actually helps when infections keep recurring
- Get each episode tested and confirmed, rather than assuming it's the same infection as last time and reusing an old prescription
- Stop any douching or internal washing — wash the external vulva with water alone, not scented products
- Switch to breathable cotton underwear and avoid staying in wet or sweaty clothing for long stretches
- Ask about a maintenance regimen if infections are genuinely frequent (commonly defined as four or more yeast infections, or three or more BV episodes, in a year) — some doctors use a longer or repeated antifungal or antibiotic course specifically for recurrent cases, different from the standard one-off treatment
- Get blood sugar checked if yeast infections keep recurring and haven't been linked to an obvious trigger
Frequently asked
How do I know if it's BV or a yeast infection without a test?
You can't reliably tell from symptoms alone, especially if infections have recurred before and you're used to a particular pattern. A fishy odour points toward BV and a thick white discharge with itching points toward yeast, but there's enough overlap that a swab test is the only way to be sure — especially important before reusing a leftover prescription.
Can I keep using the same antifungal cream every time this happens?
Not without checking first. If what's recurring is actually BV rather than yeast, an antifungal cream won't treat it, and repeated self-treatment without confirmation can delay proper treatment and mask the pattern from your doctor.
Does my husband need to get tested if I keep getting infections?
Not routinely for BV or ordinary recurrent yeast infections. If he has symptoms himself, or if your doctor suspects a sexually transmitted cause based on your specific pattern, testing and treatment for him may be recommended — this is a case-by-case call, not a blanket rule.
Is it my hygiene causing this?
Usually not in the way people assume — it's more often too much "hygiene" (douching, internal washes, scented products) disrupting the vagina's own natural balance than too little. Washing the external area with plain water is enough.
When does a recurring infection need more than the standard treatment course?
If you're having four or more yeast infections, or three or more BV episodes, in a year, that's considered recurrent, and it's worth discussing a longer or maintenance treatment approach with your doctor rather than repeating the same short course each time.