Redness, stinging and rawness where skin rubs against skin — under the breasts, in the groin, armpits or belly folds — is intertrigo. Learn what drives it, how to treat yeast overgrowth and how to keep folds dry so it stops coming back.
Intertrigo is inflammation of skin folds caused by skin-on-skin friction trapped with heat and moisture. It appears as red, raw, sometimes weeping patches that mirror each other on both sides of a fold, and is frequently complicated by candida yeast. Treatment combines keeping the fold dry, reducing friction and — when yeast is involved — an antifungal cream.
Anywhere skin touches skin creates a warm, damp, airless microclimate: under the breasts, in the groin creases, armpits, between buttocks, in belly folds and between toes. Sweat can't evaporate, friction damages the skin barrier, and the result is inflammation — intertrigo. Damaged, moist skin is then an open invitation for overgrowth of candida yeast and sometimes bacteria, which turn simple irritation into a stinging, odorous, satellite-spotted rash.
It's most common in hot weather and in people with larger skin folds, diabetes, incontinence, or jobs and sports that keep skin sweaty. Babies get the same process in neck folds and the diaper area. Intertrigo itself isn't contagious, though an infected fold can be uncomfortable enough to limit daily activity.
The foundation of treatment is changing the fold's microclimate: gently wash and thoroughly pat dry the area twice daily (a cool hairdryer setting helps), then keep the surfaces separated with a clean cotton cloth or moisture-wicking fabric. Barrier creams containing zinc oxide protect raw skin. If satellite spots, odor or persistence suggest yeast — which is very common — an over-the-counter antifungal cream such as clotrimazole or miconazole applied twice daily for two to four weeks usually clears it.
Avoid strong steroid creams alone: they calm redness briefly but feed the yeast component and thin fold skin. If a clinician judges inflammation needs treating, it's typically a short course of mild hydrocortisone combined with an antifungal. Prevention is daily fold care: dry thoroughly after showers and sweating, wear breathable fabrics, and consider antifungal powder in reliably troublesome folds during hot months.
The most common reason a 'stubborn intertrigo' fails treatment is that it was never intertrigo. Inverse psoriasis produces strikingly similar red patches in exactly the same folds — but its plaques are sharply bordered, shiny and persistent, often accompanied by psoriasis clues elsewhere (scalp scale, nail pitting, a family history). Antifungals and drying do little for it, while psoriasis-specific treatment works well. If your fold rash has lasted months despite good care, that pattern is worth showing to a clinician — or scanning first to see which possibility the AI ranks higher.
We use established public-health and dermatology references and link them directly so you can verify the guidance and read further.
Red, raw-looking patches that mirror each other on both touching surfaces of a skin fold, often stinging or burning, sometimes moist with an odor. Small satellite spots just outside the patch suggest candida yeast involvement.
If yeast is likely (satellite spots, odor, persistence), an OTC antifungal such as clotrimazole or miconazole twice daily for 2–4 weeks, plus a zinc-oxide barrier cream to protect raw skin. Avoid using steroid creams alone in folds.
Keep folds dry: pat dry thoroughly after every shower and sweat session, use breathable cotton or moisture-wicking fabrics, separate touching skin where possible, and consider antifungal powder in hot months.
Not initially — it starts as friction-and-moisture inflammation. But the damaged, damp environment commonly becomes secondarily infected with candida yeast, which is when antifungal treatment earns its place.
The usual culprits are ongoing moisture, untreated yeast, or a look-alike diagnosis — especially inverse psoriasis or erythrasma, which need different treatment. A rash persisting beyond four weeks of proper care deserves a professional exam.
Scan it — RashScan helps separate intertrigo, fungal rashes and inverse psoriasis, with clear next steps.
Scan a skin-fold rashEducational guidance only — not a medical diagnosis.