How do you know if your baby has a fungal infection?

A fungal infection(candidiasis) can show up in different ways on your baby. On the tongue, it is called thrush and looks like dried milk, which, unlike milk, can't be scraped off. In the diaper area, candidiasis looks like an intense red rash, often with smaller bumps around the edges. A fungal infection loves moist, dark areas, so you'll find redness because of it in the creases of the thighs. Candidiasis is treated with antifungal oral gel or liquid medicine (for oral thrush) or antifungal cream (for the diaper area), or both.