You can also get an ingrown toenail if your shoes are too tight. A bunion forms when your big toe slants toward the small toes and the place between the bones near the base of your big toe grows big. This spot can get red, sore, and infected. Bunions can form on one or both feet. Pointy shoes may cause bunions.
Bunions often run in the family.
Surgery can remove bunions. Plantar warts are caused by a virus. The warts usually form on the bottoms of the feet and tend to go away without treatment. Hammertoes form when a foot muscle gets weak. The weakness may be from diabetic nerve damage.