Abdominal intertrigo: care for a skin-fold rash

The fold may look red or darker than the surrounding skin and can feel sore, itchy, moist or raw. Yeast or bacteria may grow in damaged, damp skin, but not every intertrigo rash is infected.

Skin resting against skin holds sweat and reduces evaporation. Movement then creates friction, weakening the surface barrier. Hot weather, tight clothing, heavy sweating and limited airflow can worsen the cycle. A yeast-associated rash may have small nearby spots, while bacterial infection may produce increasing tenderness, odour, discharge or crusting.

Other problems, including contact dermatitis and inflammatory skin disease, can resemble intertrigo. Location alone cannot identify the cause, so persistent or recurrent symptoms may need examination and sometimes a swab or skin sample.

Wash gently, rinse away cleanser and pat the fold completely dry rather than rubbing. Choose loose, breathable clothing and change damp garments promptly. A clean, soft fabric placed loosely between touching surfaces can reduce friction, provided it is replaced when moist.

Avoid fragranced products and using several medicated creams at once. Antifungal treatment helps when yeast is involved; it will not treat every cause. A clinician can decide whether an antifungal, antibacterial, anti-inflammatory or sweat-reducing approach fits the appearance and history.

Book an appointment if the rash is worsening, keeps returning, cracks or drains, has a strong odour, or does not settle with gentle moisture control. Prompt assessment is appropriate for spreading redness, marked swelling, pus, fever or increasing pain. People with reduced immunity or poorly healing skin should seek advice early because infection can progress more readily.

Ask whether the pattern looks irritant, fungal, bacterial or inflammatory; where each prescribed product should be applied; and how long to continue it. Discuss excessive sweating, recent antibiotics, new toiletries and previous episodes, since these details can change the prevention plan.