Corns are small circles of thickened skin and although they can be found anywhere along the foot it is common to observe them at the tops and sides of toes or on the sole of the foot and they are in response to excessive pressure or friction build-ups. Types of corns include: seed corns, hard corns, interdigital corns and soft corns.
Wearing poorly fitting shoes or certain designs (pointed shoes), can place excessive pressure on an area of the foot. They also often occur on bony feet as there’s a lack of natural cushioning. They can develop as a symptom of another foot problem, such as a bunion (a deviation of the big toe), in runner’s or those with a genetic predisposition.