What should you know about erythema intertrigo?

The irritation commonly affects the underarms, groin, beneath the breasts, abdominal folds, or between the buttocks. Heat, sweat, trapped moisture, and friction weaken the skin barrier. The area can look bright red or darker than nearby skin, feel sore or itchy, and develop cracks, oozing, a smell, or a burning sensation.

A yeast or bacterial overgrowth can develop in the damaged skin. A yeast-related fold rash is called cutaneous candidiasis; it may have small spots or bumps just beyond the main red patch. Intertrigo can also be mistaken for eczema, contact irritation, or another skin condition, so appearance alone does not identify the cause.

Gently wash the fold, rinse away cleanser, and pat it completely dry rather than rubbing. Change out of sweaty clothing promptly and choose loose, breathable fabrics. Keep the fold separated with clean, dry clothing or a soft piece of gauze; replace it when damp. Avoid fragranced products and avoid applying steroid cream or combination creams without medical advice, because they can irritate skin or conceal an infection.

If the rash is persistent, recurrent, spreading, or very uncomfortable, a clinician can check whether yeast, bacteria, friction, or another condition is involved. Treatment may include a topical antifungal when yeast is suspected, while a different medicine may be needed for another cause. Follow the prescribed directions and keep the area dry while it heals.

Arrange a medical assessment if the rash does not improve with careful drying and friction reduction, keeps returning, or involves broken skin. Seek prompt care for rapidly increasing redness, warmth, swelling, worsening pain, pus, a strong new odour, fever, or red streaks. These changes can signal a spreading infection. People with diabetes, reduced immunity, or difficulty healing should seek advice earlier when a fold rash appears.

Ask: Could this be intertrigo, yeast, bacteria, or a different rash? What should I use on the area, and for how long? How can I prevent moisture and rubbing in this fold? Does a recurring rash need assessment for an underlying condition?