Yeast, BV or something else? How to tell the difference
Itching isn't always yeast and odour isn't always BV. A lot of women spend years treating the wrong thing — here's how the common culprits actually differ.
Here’s the loop we hear about constantly: something feels off, you buy a yeast treatment at the pharmacy, it helps a bit or not at all, and three weeks later you’re back. Sometimes that’s because the yeast is stubborn. Surprisingly often, it’s because it was never yeast.
The two usual suspects
Yeast (candida) is mostly about itch and irritation. Redness, swelling, burning, sometimes a thick white clumpy discharge. It usually doesn’t smell much.
BV (bacterial vaginosis) is mostly about discharge and odour. Thin, greyish-white discharge and a fishy smell that’s often strongest after sex or around your period. Often no itching at all.
They need opposite treatments — an antifungal for yeast, antibiotics for BV — which is why guessing wrong can make things worse instead of better. The CDC’s treatment guidelines are clear that BV and yeast are diagnosed with simple tests, not by looking.
The lookalikes nobody mentions
- Trichomoniasis — an STI that can look like BV, sometimes with yellow-green, frothy discharge. Easy to test for, easy to treat.
- Cytolytic vaginosis — too many lactobacilli rather than too few. Itching and burning that tends to follow your cycle. Antifungals don’t help, because it isn’t yeast.
- Lichen sclerosus — a skin condition, not an infection. Persistent itching, and skin that looks white, thin or shiny. Often treated as thrush for years. It needs a doctor.
- Irritation — from a new detergent, scented pads, lube or soap. Real symptoms, no infection at all.
What to ask for
If you’ve had three or more episodes in a year, you’ve earned a proper look. Ask for:
- Microscopy and a pH test — quick, and they separate BV from yeast.
- A fungal culture with species identification — some species, like Candida glabrata, respond poorly to the standard fluconazole pill.
- An STI test, so trichomoniasis is ruled out rather than assumed away.
You’re not being difficult. You’re asking what it is before something goes inside you. That’s the whole job.
Educational content, not medical advice. If something feels wrong, get it checked — and bring what you learned here to your appointment.
