Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
A corn is a small, hardened area of skin that usually forms on the toes due to friction or pressure. It is distinct from other skin lesions by its hard center surrounded by inflamed skin.
Related terms
Callus: A callus is a broader, less defined area of thickened skin, typically found on the hands or feet, developed from repeated friction or pressure.
Bunion: A bunion is a bony bump that forms on the joint at the base of the big toe, often leading to misalignment of the toe and creating areas prone to corns and calluses.
Plantar Warts: Plantar warts are growths caused by the human papillomavirus (HPV) on the soles of the feet that can be mistaken for corns but have tiny black dots and occur in clusters