Hi!
Bare feet in gyms and other public places can lead to spread of fungal and other bacterial infections.
Pls use Benzoly peroxide 5 % cream and Antifungal cream and powder for a month. If it persists you will have to meet a dermatologist to decide on oral medications to treat the same.
Use anti histamine to control the itch.
Next Steps
Do not scratch. Can lead to secondary bacterial infection, eczema or even cellulitis.
Health Tips
Soak all socks in 60 degree hot water for half hour. Avoid walking bare feet in gyms. Dust your shoe with anti fungal powder. Keep shoes in sunlight once a week.