Athletes Foot
This is a Fungal Infection which causes increasing itching, cracked, blistered or peeling areas of the skin. Occurs on moist water logged skin usually in between the toes - but also can occur on the soles of the feet and heels.
Avoiding Athletes Foot is easy: Wash feet daily and pay particular attention to drying in between the toes, try not to wear the same shoes everyday, wear 100% cotton socks especially for sport so your feet can breath. Avoid sharing towels/footwear and wear flip flops in public changing rooms and around swimming pools.