The short explanation
Bacterial vaginosis (BV) is most common in women of reproductive age, but it can happen after menopause too. After menopause, falling oestrogen means fewer of the protective bacteria that keep the vagina acidic, so the balance can shift more easily. Discharge and odour after menopause are also commonly caused by thinning of the vaginal lining, which can feel like infection. Because symptoms overlap, it helps to have a swab and examination. Discharge after menopause that is blood-stained, pink, brown or watery should always be checked, as it can sometimes point to changes in the womb that need investigation.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- Thrush is less common after menopause unless a woman has diabetes or uses hormone treatment.
- Perfumed washes and douching increase the chance of BV at any age.
- Treatments for thinning of the vaginal lining can also reduce irritation and some infections; your doctor can discuss them.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This cannot tell you whether your symptoms are BV, thinning of the vaginal lining or something else. An examination can.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Is this bacterial vaginosis or thinning of the vaginal lining?
- Do I need any other tests?
- What can reduce the chance of it coming back?
When to seek help
Clinician-approved guidance for this topic. When in doubt, being seen is never the wrong choice.
Book an appointment soon
- See a clinician within a few days if discharge is blood-stained or brown, or has a strong smell.
Raise it at a routine appointment
- Book a routine gynaecology visit for any new discharge after menopause. You can ask for a woman doctor, and you can bring a friend or relative into the room with you if that helps.
Sources
The evidence this explanation is built on.
- Bacterial vaginosis NHS
- Vaginal dryness NHS
- Vaginal bleeding between periods MedlinePlus (NIH)
Who wrote and reviewed this
Every AskHer answer names its author. A clinically reviewed answer also names the clinician who signed it off — if no clinician is named below, it has not been clinically reviewed.
- Author
- AskHer Editorial (AI-assisted draft) AskHer's editorial team — not an individual clinician Works in English, தமிழ், हिन्दी
- Clinical reviewer
- Nobody yet No clinician has signed this answer off, and no person on the editorial team has read it yet. That is what the “Written with AI assistance” label means. It is queued for an editor to read, and then for a clinician who works in this area. The sources it was drafted against are listed above.
- Review status
- Written with AI assistance — not yet reviewed by a person
- Last reviewed
- Not yet reviewed by a person
- Version
- 1
Correction history
Substantive changes are listed, not quietly edited away.
No corrections have been made since this answer was first published.
Did this answer your question?
Whatever you choose is filed against this version of the answer, never against you, and it is never shown as a count.
“Explain more simply” asks you which part was hard to follow, so the author knows what to rewrite. “My question is different” opens a private follow-up with this answer attached.
Saving, following up and reporting are all private. Nothing you do on this page is visible to other readers or to the doctor who wrote it, unless you ask a question.