In short

Thrush is a common yeast infection that causes thick white discharge, itching and soreness. 

In teens, it's often triggered by antibiotics, tight or damp clothing, or scented washes, not by anything she's done wrong. 

Most cases clear with antifungal treatment in a week or two. 

If your daughter is under 16, a doctor should confirm it's thrush before she treats it.

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Why does my daughter keep getting thrush?

Thrush happens when a yeast called candida, which lives harmlessly in the body, grows more than usual and tips the natural balance off. 

It's incredibly common: around 7 in 10 women will have thrush at least once.

Some girls get it again and again, and there's usually a reason rather than anything she's doing wrong.

Common triggers in teenage girls include:

• A recent course of antibiotics, including ones prescribed to manage teen acne
• Tight leggings, gym kit or synthetic underwear that traps heat and moisture
• Staying in damp swimwear or sweaty clothes after sport
• Soaps, bubble baths, scented washes or vaginal deodorants that irritate the delicate skin
• Hormonal changes around her period
• Being run down
• Health conditions like diabetes

Recurrent thrush has a medical definition: four or more episodes in a year. 

Recurrent thrush affects an estimated 5% of women, so if your daughter falls into this group, she's far from alone.

What does thrush look like in my daughter?

The classic signs are thick white discharge, often described as looking like cottage cheese, along with itching and soreness around the vulva (the outer genital area). 

It usually doesn't smell.

She might also feel stinging or soreness when she wees, or discomfort that she finds hard to put into words.

The discharge itself can be confusing, because a certain amount of thick white discharge is completely normal in teens. 

With thrush, it's the itching and soreness alongside it that tend to be the giveaway.

To help your teen understand her body better, you may want to introduce her to luna. 

luna gives teen girls a space to understand what's normal for their body and what isn't, with everything reviewed by medical experts rather than pulled from social media.

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What can I do to help stop my daughter's thrush coming back?

A few gentle changes to what touches the skin can make a real difference, and none of them involve scrubbing harder. 

Thrush likes warmth and moisture, so the aim is to keep the area cool, dry and unirritated.

Things that often help:

• Washing with water or a fragrance-free emollient rather than soap or shower gel 
• Drying properly after a bath, shower or swim
• Choosing cotton underwear and changing out of gym kit or wet swimwear promptly
• Skipping scented products, wipes and vaginal deodorants around the area
• Avoiding very tight leggings or tights every day where she can

Scented period products are a common culprit, and it's worth knowing why they can do more harm than good for sensitive skin.

How do I treat my daughter's thrush?

Thrush is treated with antifungal medicine, which comes as a cream, a pessary (a tablet that goes into the vagina) or a tablet she swallows. 

It usually clears up within 7 to 14 days.

Here's the part that matters most for your daughter's age: if she's under 16, the advice is to see a doctor rather than buying treatment over the counter. 

A pharmacist can only sell antifungal treatment to people aged 16 to 60 who've had thrush diagnosed before.

So for a younger teen, or for a first-time bout at any age, a doctor confirming it's actually thrush is the right first step. 

It's quick, routine, and something doctors see constantly.

When should my daughter see a doctor about thrush?

For a teenager, it's worth getting that first bout checked so you know exactly what you're dealing with. After that, certain things are always worth a doctor's visit.

Contact a doctor if:

• It's her first time having these symptoms, or she's under 16
• She's had four or more bouts in a year
• The treatment hasn't worked within a week or two
• There's blood in the discharge, or the discharge smells strongly
• She has tummy or pelvic pain, or a fever

A doctor can take a gentle swab to confirm it's thrush, because a few other things, including simple skin sensitivity, can look and feel similar. 

For recurrent thrush, they may suggest a longer course of treatment, sometimes over several months.

A good next step

If your daughter has classic thrush symptoms and she's under 16, a quick doctor's visit will confirm it and get her the right treatment. 

If she keeps getting it, that same visit is the route to finding out why.

These conversations can feel awkward on both sides, and a little help talking to your daughter about hygiene can take the pressure off. 

luna is there for the questions she might not want to ask out loud, with expert-reviewed answers and no judgement.

Frequently asked questions

Is thrush a sign my daughter is sexually active?

No. Thrush isn't a sexually transmitted infection, and plenty of girls who've never had sex get it. 

It's about the balance of yeast in the body, which lots of everyday things can upset.

Can antibiotics give my daughter thrush?

Yes, this is one of the most common triggers. 

Antibiotics can knock out the helpful bacteria that keep candida in check, which is why thrush sometimes shows up after a course of antibiotics, including those given for acne.

Is recurrent thrush dangerous?

It isn't dangerous, but it can be uncomfortable and wearing. 

If your daughter is getting it repeatedly, a doctor can look for a trigger and prescribe a longer treatment plan, so it's worth booking in rather than riding it out.

Could it be something other than thrush?

It can. Bacterial infections, skin conditions like eczema, and simple irritation can all cause similar itching or discharge. 

That's exactly why a doctor confirming the cause, especially the first time, is so useful.

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