Dr Sylvia Kama-Kieghe, FRCGP — NHS GP & Women’s Health Doctor

Why does my discharge never go away?

If you have treated white vaginal discharge two, three, or even four times, only for it to keep coming back, it may not be a simple thrush infection.

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Let’s look at what could be causing it.

1. Recurrent thrush

Recurrent thrush is the official term used when thrush happens four or more times in a year.

If your discharge clears up after using an over-the-counter pharmacy cream but returns just “two weeks” later, it is important to confirm whether it is actually recurring thrush or a persistent condition.

If it settles completely and then comes back weeks or months later, that pattern points to recurrent thrush, and it needs a swab rather than another cream.

What if it never fully settles — it eases for a while and flares again, or just grumbles on? That is a persistent pattern, and it is worth checking whether it is thrush at all.

A swab test is extremely important. It helps confirm the infection rather than assuming every episode is the same.

2. A different type of yeast

Most thrush is caused by a type of yeast called Candida albicans, which usually responds well to standard treatment.

However, there are less common types that do not respond in the same way. These are known as non-albicans Candida. One example is Candida glabrata.

The symptoms can look exactly like ordinary thrush:

• Troublesome/distressing itching
• White vaginal discharge
• A cottage cheese-like texture

If treatment keeps working and then failing, another species of Candida is worth raising with your doctor.

3. High blood sugar

When blood glucose levels are high, even before you have been diagnosed with diabetes, it can change the vaginal environment in a way that allows recurring yeast to overgrow.

If your ‘discharge keeps coming back’, it is worth getting a simple blood test to check your blood sugar.

4. Hormone changes

Not all persistent white discharge is caused by an infection. Hormonal shifts can happen:

• When you are on the pill
• During pregnancy
• While ovulating

These changes can cause a milky white discharge known as leucorrhoea. Most of the time, it is not a sign that anything is wrong.

This type of discharge usually has:

• No offensive smell
• No itching
• No bleeding
• No other associated symptoms

However, if it is frequent or heavy, see your doctor to make sure nothing else is going on.

5. Biofilm

Some yeast cells can form a protective layer called a biofilm on the vaginal wall. This is similar to what happens in cases of recurrent bacterial vaginosis (BV).

Standard antifungal treatment may clear the yeast on the surface, but underneath, the cells can regroup and multiply, causing another infection.

This can leave some women stuck in a frustrating cycle of treatment, temporary relief and recurring discharge.

What to say to your doctor

When you attend your appointment, try not to start with, “I think I’ve got thrush again.” Instead, explain the pattern you have been experiencing.

Tell your doctor:

1. How many times it has happened this year.
2. Whether treatment worked, and how long it took for the discharge to return.
3. Whether the discharge changes with your menstrual cycle or contraception.

Do not just wait and see if your discharge changes colour, develops a strong offensive smell, or comes with pain, bleeding or itching that is getting worse.

Key takeaway

A persistent white vaginal discharge does not always mean you have ordinary thrush. It could be recurrent thrush, a different type of yeast, high blood sugar, hormonal changes, or biofilm.

The important thing is to understand the pattern rather than keep repeating the same treatment. Track your symptoms, share what you have noticed with your doctor, and ask about a swab and proper examination.

⚠️ Important Disclaimer — If your vaginal discharge keeps coming back despite treatment, or if anything concerns you, speak to your doctor. This information is for educational purposes only and should not replace an assessment by a healthcare professional. 

More Reading

• The Surprising Truth About Normal vs. Abnormal Vaginal Discharge
• Will Yeast Infection Go Away on its own? | FAQs
• Is it thrush, BV or something else? How to tell the difference
• STI Symptoms in Women: What to Look For — A GP’s Honest Guide
• Home Remedies for Yeast Infections That Really Work