Fungal infections of the foot otherwise known as tinea pedis are an overgrowth of fungal spores that irritate the skin. Fungal spores live on the skin as part of the natural flora, it is only when conditions are right that they multiply and cause a problem.
Fungal spores thrive on warm, moist conditions. It is therefore important to keep the feet as cool and dry as possible. This can be achieved by changing socks and shoes regularly if necessary part way through the day. Anti-fungal powder can be dusted on to the socks and shoes prior to wearing, sandals can be worn in weather. If the fungal infection is established all chemists will stock over the counter anti-fungal sprays and creams which are effective treatments.