Recurrent yeast infection: at what point do we speak of repeated yeast infections?

We speak of recurrent thrush from 4 or more episodes within 12 months. Doctors call it recurrent vulvovaginal candidiasis.

According to an analysis published in The Lancet Infectious Diseases (Denning et al., 2018), it affects nearly 4% of women every year, representing about 138 million worldwide, and up to 9% of 25–34-year-olds.

It can be treated, but differently from a one-off thrush infection: the diagnosis must be confirmed, its triggers identified, and then a long-term treatment followed.

You finish using a pessary, the itching calms down... and then it all starts again a few weeks later.

This cycle is exhausting. Here is why your thrush keeps coming back, and how to break the cycle.

Recurrent thrush: what if it is not actually thrush?

This is the first question to ask, and the one that is most often forgotten. Faced with recurring episodes, gynecologists recommend "reconsidering the diagnosis".

Many women treat themselves at each flare-up, without ever having had a swab test that confirms the presence of Candida.

Yet, several issues cause very similar symptoms:

• Bacterial vaginosis: greyish or yellowish discharge, fishy odour. Antifungals do not cure it, and it also frequently recurs.

• An irritation or an allergy: intimate soap, wipes, scented sanitary products, lubricant, condom.

• A skin condition of the vulva: eczema, psoriasis, lichen sclerosus. It is very itchy and does not respond to pessaries.

• Genital herpes: burning and small lesions sometimes mistaken for thrush.

• Vulvodynia: pain or burning of the vulva without infection, often after years of repeated treatments.

• An STI: trichomoniasis, chlamydia, or gonorrhoea.

How to confirm that it is indeed thrush?

Before starting a long-term treatment, your doctor needs to confirm the diagnosis with a vaginal swab taken during a flare-up.

It identifies the fungus (Candida albicans or another species) and detects any potential resistance.

Between two consultations, a self-test helps you stop guessing. The Santelle vaginal test analyses 6 biomarkers from a sample you collect yourself, with a result in 10 minutes in the app.

It tells you if your flora is unbalanced and helps you find out if your symptoms look more like thrush or vaginosis.

A self-test provides guidance, but it does not replace a swab test done by your doctor. And if your test is negative while symptoms persist, consult a doctor: it is often a sign that something other than thrush is the cause.

Why does my thrush come back after treatment?

Most often, the treatment has calmed the flare-up without treating what triggers it.

Candida albicans naturally lives in the vagina of many women without causing any problems: a pessary reduces its quantity, but does not eliminate it forever.

As soon as the balance is disrupted again, it takes over. There are several reasons for these recurrences:

• Too short a treatment: a "single dose" pessary is enough for a one-off thrush infection, but rarely for recurrent thrush. Specialists recommend treating the vulva with cream for at least 10 days during each flare-up.

• A triggering factor still present: antibiotics, poorly controlled diabetes, hormones, excessive hygiene (see the next section).

• Another fungus: Candida albicans is responsible in about 90% of cases, but other species like Candida glabrata do not respond as well to standard treatments.

• Drug resistance: rarer than you might think. La Revue du Praticien notes that a true resistance must be distinguished from a simple recurrence before changing treatment.

• A cause other than thrush: if the pessary never really works, it is possible that it is not thrush (see above).

Thrush that won't go away with a pessary: what to do?

If your symptoms do not disappear 3 to 5 days after finishing the treatment, do not use a second pessary blindly.

Consult a doctor to have a swab test: it will tell you if it really is thrush, what species it is, and which treatment to choose.

What are the causes of recurrent thrush?

Recurrent thrush does not have a single cause: it is often the combination of a personal susceptibility and one or more factors that unbalance the flora.

A degree of predisposition also remains unique to each woman: some react more strongly to the presence of Candida.

It is not a question of hygiene or lifestyle, and you should not blame yourself for it.

Why do I get thrush after every intercourse?

In general, your partner is not "giving" you back your thrush.

In a study by the University of Michigan that followed 148 women and their partners for a year, the presence of Candida in men did not increase the risk of recurrence (Reed et al., Journal of Women's Health, 2003).

The fungus was already there: friction and micro-lesions of the mucosa during intercourse help it to grow.

Other factors can play a role. The same study associates receiving oral sex (cunnilingus) with more recurrences, probably because saliva disrupts the vulvar balance.

Semen, which is slightly alkaline, also temporarily raises vaginal pH, and some lubricants or condoms irritate the mucosa.

Finally, "thrush" that returns after every intercourse can sometimes hide vulvodynia, which is pain in the vulva without infection.

It is treated differently from thrush, for example with pelvic floor physiotherapy.

Should you treat your partner for recurrent thrush?

No, not if they have no symptoms. However, if your partner has redness or itching on the glans, they should consult a doctor and seek treatment.

Why do I get thrush before my period?

In the days leading up to your period, hormonal fluctuations alter the vaginal environment and can wake up Candida.

If your flare-ups return every month at the same time, keep a log of it: your doctor can then suggest a targeted preventive treatment, just before your period, rather than treating each flare-up once it has settled in.

What is the treatment for recurrent thrush?

Once the diagnosis is confirmed, your doctor chooses between three strategies.

Does fluconazole for 6 months work?

Yes, as long as you take it. In the major study on the subject, published in 2004, 9 out of 10 women had no thrush during the 6 months of treatment.

Without treatment, it was fewer than 4 out of 10. After stopping, some thrush returns: six months later, just over 4 out of 10 women still had no recurrence, which is twice as many as without treatment.

In other words, long-term treatment offers you real relief, and it works even better if you also address what triggers your thrush.

If it returns after stopping, do not panic: your doctor can extend the treatment or switch to once a month, often around the time of your period.

Does fluconazole have side effects?

It is generally well tolerated. Rare effects on the liver are possible, but no routine blood tests are recommended.

It can interact with other medicines: tell your doctor about all your treatments. It is contraindicated during pregnancy.

Recurrent thrush: do probiotics and a sugar-free diet work?

When standard treatments fail, it is normal to look for other avenues. The internet is full of promises; here is what studies show.

Are probiotics effective against recurrent thrush?

They can help, but on their own, they are not enough.

Gynecologists, however, consider them a "good supplement" to antifungal treatment. If you take them, see them as support for your flora, not as a cure.

Should you stop sugar to cure thrush?

If you are diabetic, yes: properly controlling your blood sugar is part of the treatment, as excess sugar feeds the fungus.

Without diabetes, no robust study shows that a strict "anti-candida" diet prevents recurrences.

A balanced diet is still a good idea for your overall health, but you do not need to deprive yourself of everything.

Recurrent thrush and "digestive candidiasis": what is the link?

Some websites claim that most recurrent thrush comes from a "digestive candidiasis" to be treated with supplements.

This concept is not recognized by medical guidelines, and the figures put forward are not based on published studies.

Be wary of promises of permanent cures and expensive therapies: in case of doubt, talk to your doctor or pharmacist.

Vinegar, essential oils, garlic: should you try them?

It is best to avoid them. These home remedies have not been proven effective, and applied to an already irritated mucosa, they can cause burns and inflammation, keeping the cycle of symptoms going.

Recurrent thrush during pregnancy: what to do?

Thrush is more common during pregnancy: the rise in oestrogen promotes Candida.

It usually remains harmless, but it must always be treated with professional advice.

The treatment changes, however: oral fluconazole is contraindicated during pregnancy.

Your doctor or midwife will offer you suitable pessaries and creams, sometimes for a longer duration than outside of pregnancy.

Do not take any treatment without their advice, even a pessary you are already familiar with.

Also consult as soon as your symptoms change: an unusual odour, or grey or green discharge can signal bacterial vaginosis, which increases the risk of premature birth and must be treated quickly.

If your thrush often returns after giving birth, a long-term treatment can be discussed once breastfeeding is finished or with your doctor.

Can recurrent thrush hide a serious disease?

In the vast majority of cases, no. Recurrent thrush most often occurs in healthy women, and it is not a sign of cancer.

However, it deserves to be taken seriously, as it can sometimes reveal a problem that needs treating:

• Diabetes that is undetected or poorly controlled: this is the first factor your doctor will look for, with a simple blood test.

• A drop in immunity, linked to a treatment or an illness.

• A skin condition of the vulva, such as lichen sclerosus, which can be treated but must be monitored.

What are the risks of untreated thrush?

Vaginal thrush causes ongoing itching, burning, and fissures of the vulva, and its recurrences take a heavy toll on daily life, sleep, and sex life.

Repeated episodes can also leave lasting vulvar pain.

You do not have to "live with it": if thrush is ruining your life, tell your doctor clearly and ask for appropriate care, or even a specialist opinion in gynecology or vulvar dermatology.

How to prevent thrush from returning?

No single action guarantees the end of recurrences, but combined, they significantly reduce the opportunities given to Candida.

How to prevent thrush in daily life?

• Wash only the vulva, once a day, with a gentle unscented cleanser. Never douche.

• Dry yourself well after showering, swimming, or playing sports, and do not stay in wet swimwear.

• Wear cotton knickers, avoid very tight synthetic clothing, and daily panty liners.

• Choose a fragrance-free, glycerin-free lubricant if intercourse triggers your flare-ups.

• Tell your doctor about your recurrent thrush as soon as they prescribe antibiotics: they can plan a preventive treatment.

• If you are diabetic, monitor your blood sugar closely.

How do I know what triggers my thrush?

Note the date of each episode, the stage of your cycle, antibiotics taken, intercourse, stress. After a few months, links often appear.

This log is also valuable for your doctor: it helps them choose between treating each flare-up, a targeted preventive treatment, or a long-term treatment.

How to monitor your vaginal flora between two episodes of thrush?

When you suffer from recurrent thrush, the hardest part is often knowing what is really going on: is it a new flare-up of thrush, vaginosis, or simple irritation?

The Santelle 3-test pack allows you to test at the very first symptoms, check the state of your flora after a treatment, and monitor its progress in the app.

You avoid treatments "just in case" and you provide your doctor with concrete results.