When is thrush not thrush?

What the new evidence means for women’s health

Same symptoms, same antifungal, often grabbing one of her old tubes from the back of the cupboard.

But, what if it was never thrush? What if it was lichen sclerosus?

That question runs through two new papers the published this month, both from Ford T, et al., drawn from interviews with patients and the clinicians who treat them.^1,2

This is not a story about anyone looking the wrong way. The researchers are clear that the clinicians they spoke to were largely following national guidance.^1,2 The difficulty is built into the word recurrent itself¹ – what does that even mean?

Recognising recurrence means seeing a pattern across time, capturing swabs while she is symptomatic, and holding the thread over several appointments, and unfortunately, the systems are designed around one-off – acute thrush rather than the version that keeps coming back.¹

Lichen sclerosus is the one that matters most. Alongside vulvodynia, dermatitis and the genitourinary syndrome of menopause, it can wear the recurrent thrush label for years.^1,3 It scars, sometimes permanently, and it is associated with an increased risk of vulval cancer. The absolute risk is low, around 2.2%, but it is real, and treatment appears to reduce it, which is the whole reason early recognition is so important.²

The tells are specific:

·       Lichen sclerosus tends to show as white, fragile skin in a figure-of-eight around the vulva and perianal area, often with fierce itch and, in time, fusion or scarring.³

·       Whereas candidiasis is more likely to bring vaginal involvement and discharge.³

What seems to help most is simply the chance to look, and to record what is seen so the picture builds across visits rather than resetting each time.^1,3

When a UK survey asked clinicians about this, 37.7%responders said they had never had any teaching on vulval skin disease, and 97.5% wanted clear diagnostic criteria.⁴ This gap still remains.

There is a live policy edge too. As vulvovaginal care moves towards pharmacy-first and self-testing routes, the same study flags a possible unintended consequence: where a pathway involves no examination and no swab, the pattern that defines recurrence is harder to document, and the conditions that resemble thrush harder to separate out, whoever the patient sees.¹

In the absence of agreed diagnostic criteria, the papers still leave primary care with a workable starting point. UK guidance, as the diagnosis study sets out, treats recurrent thrush as

“Four or more episodes in a year, with two confirmed on microscopy or culture.”¹

Around that, the authors suggest a few practical habits, see the table and checklist below, which is also available to download and share.

References:

1. Ford T, Ziebland S, Tonkin-Crine S, Hayward G, McNiven A. ‘It’s not just thrush, it’s recurrent thrush’: a qualitative study of patient and clinician perspectives on diagnosing recurrent vulvovaginal candidiasis. Br J Gen Pract 2026. https://doi.org/10.3399/BJGP.2025.0437

2. Ford T, Tonkin-Crine S, Hayward G, Ziebland S, McNiven A. Accumulative experiences of recurrent vulvovaginal thrush: a qualitative study of primary care navigation from patient and clinician perspectives. Br J Gen Pract 2026. https://doi.org/10.3399/BJGP.2025.0531

3. Rees S, Owen C, Baumhauer C, Hillman S. Vulval lichen sclerosus in primary care: thinking beyond thrush and genitourinary symptoms of the menopause. Br J Gen Pract 2023; 73: 234-236. https://doi.org/10.3399/bjgp23X732861

4. Crew A, Leatherland R, Clarke L, Owen C, Simpson RC. Barriers to diagnosing and treating vulval lichen sclerosus: a survey study. Br J Gen Pract 2025. https://doi.org/10.3399/BJGP.2024.0360