These are skin fissures, a common problem that many people ... such as the back of the feet, fingers, and between the toes. While they may appear as minor annoyances, if not treated, they can ...

Fissures are painful ... inflammation, and scaly skin between the toes. Tinea pedis dermatophytes (fungi that infect the skin) cause it. Toenail fungus, known as onychomycosis, causes toenails ...