Tinea pedishttps://en.wikipedia.org/wiki/Athlete's_foot
Tinea pedis is a common skin infection of the feet caused by fungus. Signs and symptoms often include itching, scaling, cracking and redness. In rare cases the skin may blister. Athlete's foot fungus may infect any part of the foot, but most often grows between the toes. The next most common area is the bottom of the foot. The same fungus may also affect the nails or the hands.

Some methods of prevention include: not going barefoot in public showers, keeping the toenails short, wearing big enough shoes, and changing socks daily. When infected, the feet should be kept dry and clean and wearing sandals may help. Treatment can be either with antifungal medication applied to the skin such as clotrimazole or, for persistent infections, antifungal medications that are taken by mouth such as terbinafine. The use of the antifungal cream is typically recommended for four weeks.

Treatment ― OTC Drugs
* OTC antifungal ointment
#Butenafine [Lotrimin]
  • A severe case of athlete's foot
  • In fungal infections, a protruding margin with scales is characteristically observed.
References Tinea Pedis 29262247 
Tinea pedis, also known as athlete's foot, results from dermatophytes infecting the skin of the feet. Patients contract the infection by directly contacting the organism while walking barefoot.
 Diagnosis and management of tinea infections 25403034
The most frequent infections in kids before puberty are ringworm on the body and scalp, while teens and adults are prone to getting ringworm in the groin, on the feet, and on the nails (onychomycosis).