A raw, moist rash in the skin folds. The treatment is as much about keeping the area dry as it is about any cream.
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Intertrigo is inflammation where two surfaces of skin sit against each other — under the breasts, in the groin, between the buttocks, in the armpits, in abdominal folds, and between the toes.
Warmth, moisture and friction break down the skin surface. The result is a red, sometimes raw, often sore area that mirrors itself on both sides of the fold.
It starts as simple irritation, but it rarely stays that way. A warm moist break in the skin is an excellent place for Candida or bacteria to settle, and secondary infection is what turns an uncomfortable rash into a genuinely painful one. Recognising that step is the main clinical decision here.
In deeper skin tones the redness may be subtle and read as violet, grey or darker brown rather than red — which is a common reason it is missed or under-treated.
The mechanism is simple: skin against skin, plus moisture, plus friction. Sweat cannot evaporate, the surface layer softens and breaks down, and rubbing does the rest.
By appearance and location, and it photographs adequately — though the fold needs to be held open and well lit, which is worth saying because most photographs sent in are taken from too far away.
A swab is worth taking where it is recurrent or not responding. An HbA1c is worth checking in anyone with recurrent candidal intertrigo, and is one of the more useful tests we arrange from a skin complaint.
This treats well remotely, provided the photographs are good and the fold is held open.
A potent steroid cream used alone will often make intertrigo worse. It calms the redness for a few days while allowing any yeast present to flourish, and prolonged use thins skin that is already fragile. This is one of the commonest reasons a fold rash becomes a months-long problem.
What needs seeing in person: extensive infection with fever, a suspected abscess, ulceration, or any fold rash that has not responded to correct treatment — which occasionally turns out to be inverse psoriasis or something rarer.
Seek same-day advice for spreading redness beyond the fold with fever or feeling unwell, which suggests cellulitis; increasing pain with swelling and a fluctuant lump, suggesting an abscess; or any breakdown of the skin into an open ulcer.
Call 999 or go to A&E for severe pain out of proportion to the appearance, rapidly spreading redness, skin turning dusky or black, or fever with confusion. Severe soft-tissue infection in a skin fold is rare but is a genuine emergency.
Arrange a routine appointment for a fold rash lasting more than two weeks despite sensible measures, recurrent episodes, or thrush that keeps returning — which warrants a diabetes check.
Weight loss reduces both the depth of the folds and the sweating, and is the only measure that changes the underlying situation. Good diabetes control matters for the same reason. Neither is a quick answer, and both are worth saying honestly.
A pharmacist can supply antifungal cream and barrier preparations without any appointment, and for a straightforward case that is the cheapest and fastest route. Your NHS GP treats it free of charge.
Where a private consultation earns its fee is in the cases that have already failed. Distinguishing candidal intertrigo from erythrasma from inverse psoriasis is where most treatment goes wrong, and that distinction needs someone to look properly rather than to guess from a description at a pharmacy counter.
Arranging an HbA1c quickly is the other thing worth paying for, in someone with recurrent thrush in the folds who does not want to wait weeks to find out.
NHS dermatology referral is free for the stubborn cases, though waits are long.
NICE Clinical Knowledge Summary, Candida — skin, covers the diagnosis and treatment of candidal intertrigo, including the role of satellite lesions and the combination of an antifungal with a short course of mild topical corticosteroid.
NICE Clinical Knowledge Summary, Fungal skin infection — body and groin, sets out the distinctions between candidal intertrigo, dermatophyte infection and erythrasma, which is the diagnostic decision this page turns on.
NICE NG28, Type 2 diabetes in adults, and associated CKS guidance identify recurrent candidal infection as a presenting feature warranting assessment for diabetes.
British Association of Dermatologists patient information covers skin fold care and the risks of prolonged potent topical steroid use in flexural skin.
Not to begin with. It starts as irritation from moisture and friction. Candida frequently moves in afterwards, which is why so many cases end up needing an antifungal — but treating it as fungal from the outset misses the cause.
Because the fold is still warm, moist and rubbing. Creams treat the episode; only the drying measures, clothing changes and — where relevant — weight and diabetes control change the conditions that produced it.
Briefly, and ideally alongside an antifungal rather than instead of one. A short course calms genuine inflammation. Used alone or for weeks, a steroid lets yeast flourish and thins already fragile skin — which is how a two-week rash becomes a six-month one.
No. It absorbs a little moisture then cakes into a damp abrasive paste in the fold. A dedicated moisture-wicking fabric strip does the job properly.
Not on its own — but recurrent candidal intertrigo is one of the ways undiagnosed diabetes shows up, and an HbA1c is a reasonable check if it keeps returning.
Simple intertrigo improves within a week of proper drying. Candidal intertrigo takes two to four weeks of antifungal treatment. If there has been no improvement at all after two weeks of doing the right things, the diagnosis is worth revisiting — erythrasma and inverse psoriasis both masquerade as this.
September 5, 2026
Ongoing
Time to be seen
Appointment length
Your NHS record in the room
Written treatment plan
Told when a test isn’t needed
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Same day, usually
20 minutes
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Yes, and told why
£40 for 20 minutes
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Typically 10 minutes
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Usually
Free
Same day
Often 10 to 15 minutes
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Yes. Care is led personally by Dr Mohammad Khan, so you are not passed between clinicians. Continuity is the point of a small practice: someone who knows your history and is listening attentively rather than working through a checklist.
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Twenty unhurried minutes and a comprehensive assessment. A written treatment plan is included, along with any prescription, sick note or referral letter arising from the consultation, at no extra charge.
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It means the diagnosis can usually be made from your history and photographs, and that treatment can be arranged safely without examining you. Where a condition is not marked treatable online, it is because examination is the diagnosis — listening to a chest, feeling an abdomen, examining an ear or a joint — or because a procedure or device is needed.
Yes, where there is a genuine bacterial infection — cellulitis, impetigo, bacterial urine infections, confirmed strep throat. We will also frequently tell you that you do not need one. Most sore throats, coughs, colds and earaches are viral, and an antibiotic gives you the side effects with none of the benefit.
If your problem turns out to be genuinely outside what we can do remotely, the doctor will tell you straight away, point you to the right service, and refund your fee in full. We would rather do that than fill twenty minutes to justify the charge.
Call 999 or go to A&E — do not book an online appointment and do not wait for a reply to an email. For urgent problems that are not emergencies, NHS 111 is available 24 hours a day, online or by phone, and can direct you to the right service.
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