Yeast infection or BV? How to tell the difference

Yeast infections and bacterial vaginosis (BV) are the two most common causes of vaginal symptoms in women — and they're frequently confused, even by healthcare providers. Both cause itching, discharge, and discomfort. But the treatments are completely different, and treating one as the other can make it worse.

What's actually different

A yeast infection is an overgrowth of Candida, a fungus that normally lives on the body in small amounts. BV is a bacterial imbalance — the "good" lactobacilli lose ground to anaerobic bacteria like Gardnerella. Both happen when the vaginal microbiome gets disrupted (antibiotics, stress, new sexual partner, hormonal shifts), but the organisms — and the meds that kill them — are different species.

The discharge tells you a lot

The single most useful clinical clue is the discharge itself:

• Yeast: thick, white, clumpy — often described as "cottage cheese." Usually odorless or mildly yeasty.
• BV: thin, grayish-white, watery — with a distinct fishy odor, especially after sex.

Itching vs burning

Yeast infections itch. That's the dominant symptom — intense, persistent vulvar itching. BV often doesn't itch much; it's more about the odor and the thin discharge. Burning can happen with both, but itching-dominant = yeast, odor-dominant = BV.

Timing relative to your period

BV often flares around your period or shortly after. Yeast infections tend to flare after antibiotic use, during pregnancy, or when you're immunocompromised (poorly controlled diabetes is a classic trigger).

Why getting it right matters

Fluconazole (the standard yeast treatment) does nothing for BV. Metronidazole or clindamycin (the standard BV treatments) do nothing for yeast. If you grab OTC miconazole off the shelf for what's actually BV, you'll feel worse, spend more money, and delay real treatment. The inverse is also true — taking leftover metronidazole for a yeast flare can kill your lactobacilli even further and trigger a full yeast overgrowth.

How we handle this on intake

Bidwell offers online assessment for eligible adults with suspected yeast or BV symptoms. Your clinician reviews the pattern and decides whether treatment is appropriate or an examination or testing is needed. An antifungal does not treat BV, and BV antibiotics do not treat yeast.

When you genuinely need in-person care

• Symptoms persist after an OTC antifungal course or return within two months: get evaluated rather than starting repeated courses yourself.
• New partner + new symptoms (STI screening matters here)
• Pelvic pain, fever, or pain with deep intercourse
• Pregnancy with any vaginal symptoms
• Recurrent yeast symptoms (three or more symptomatic episodes in less than a year): individual clinician assessment and testing when needed