Skin tenderness or soreness on the skin of the foot.
A blister is caused by friction between the skin and the inside of a shoe or clothing. Heat builds up causing a swelling under the skin which may or may not have blood in it.
Corns and calluses occur when there is excess or thickening of the skin, usually on the soles of the feet. Calluses form on weight bearing parts of the body and corns on non weight bearing areas.
A verruca is also known as a plantar wart and appears on the sole of the foot. They are the same as warts on any other body part and are caused by a virus, known as human papilloma virus (HPV).
Skin conditions of the foot are common in sports and most are easiliy avoidable. They include athletes foot, blisters, corns, calluses and verucca.