Calluses
Calluses are a thickening of the skin. A little callus is normal and protects the skin and the foot. However, too much callus can cause pain, feel like a burning sensation or start to crack.
Calluses often occur under the forefoot and under the heel. But they can also appear on the side of the foot or on the toes. If calluses keep coming back, this is often due to excessive pressure on the same spot.

What is it?
Calluses are a thickened, keratinised layer of skin. The skin forms calluses in response to pressure or friction.
Calluses are not dangerous. However, they can cause discomfort if the callus layer becomes too thick. This can lead to cracks forming. A corn may also develop within the callus, causing discomfort.