What should you know about intertrigo bacterial infection?

Intertrigo begins with friction, heat, and moisture in a fold. Cracks or softened skin can allow bacteria to multiply, producing worsening soreness, warmth, swelling, pus, crusting, unpleasant odour, or redness that extends beyond the fold. Yeast infection and simple inflammation may cause some overlapping features, so a red fold does not by itself establish bacterial infection. A clinician may examine the area and take a swab when treatment choice is unclear.

Keep the area gently clean and thoroughly dry, change damp clothing, and reduce rubbing with loose breathable garments. Avoid squeezing, scraping, fragranced products, and sharing towels. Do not use leftover antibiotics or rely on an antifungal cream unless a clinician has advised it for the diagnosed cause. Medical treatment may involve a prescribed topical or oral antibiotic, depending on the depth and extent of infection.

Seek same-day medical advice for rapidly spreading redness, marked warmth, increasing swelling, severe pain, pus, fever, chills, red streaks, or feeling faint or unwell. Emergency assessment is appropriate for confusion, severe weakness, or symptoms spreading quickly. Contact a clinician early if you have diabetes, poor circulation, or reduced immunity.

Ask whether the fold has bacterial infection, yeast infection, or both; whether a swab is needed; and which treatment is appropriate for the site. Check how to apply medicine, when improvement should be reviewed, how to prevent moisture returning, and which changes require urgent reassessment.