A rash on top of your foot or anywhere on your foot can have several causes. Common foot rashes include fungal or bacterial infections, allergic reactions, contagious skin conditions, and more.

Hand, foot, and mouth disease (HFMD) is a viral illness typically seen in children five years and under. Mouth sores, hand and foot rashes, and a low-grade fever are all characteristics of HFMD.

When they infect the skin, they cause mild but annoying rashes. Fungal skin infections are also known as tinea infections. When fungus grows on the feet, it is called athlete's foot (or tinea pedis).

foot, and mouth disease (HFMD). This highly infectious infection spreads quickly among children and can also affect adults. It's marked by a painful rash around the mouth, on the palms of the ...