The brown spots on the bottom of your feet could be planar warts.
Warts are caused by one of several related viruses called human papillomaviruses. Some types are associated with genital warts. Other types tend to be responsible for warts on fingers, hands, toes and feet.
No! Warts are from a virus and you can't get it from swimming pools.
on the soles of your feet
Perfectly normal.
Plantar warts typically develop and grow slowly over a period of weeks to months on the feet.
warts
You can go to a doctor and they will prescribe a medicine to help keep the warts on your feet away.
Washing and cleaning your skin daily. Try to keep your feet (or other appendages) from getting too humid. Wear socks and change them daily. If you have warts, a Doctor with prescribe freezing them off and antibiotics.
Warts are benign growths caused by the human papillomavirus (HPV) and can be classified into several types: common warts (verrucae vulgaris), plantar warts (verrucae plantaris), flat warts (verrucae planae), filiform warts, and genital warts (condylomata acuminata). Each type varies in appearance and location, with common warts typically found on the hands, plantar warts on the soles of the feet, flat warts on the face and legs, filiform warts around the mouth and eyes, and genital warts in the genital area.
warts, or athletes foot and fungus
Probably verruccas, a human papilloma viral infection. They are just warts on the feet. Get a preparation from a drugstore or get them frozen off. Keep feet dry during medication and avoid swimming in public baths and communal showers. For more information see the related link below: