Painful corns and calluses can make your life miserable. The cause is usually a bone enlargement or a spur. They can also form when you have a hammertoe. Sometimes it is from a misalignment of a bone. The shoe rubs the toe causing a buildup of hard skin and pain.
Treatment for these two conditions usually requires a change of shoes and/or use of orthotics, which cushion these problems. Surgery is another alternative if corns or calluses become too painful.