What to do if i have a corn on my foot, please help?

Change shoes.: A "corn" is a hard calloused tissue that grows on a toe in response to abnormal friction. Depending on the location of the problem, larger or different style shoes may help alleviate the pain and prevent the "corn" from reoccurring. If you are able, gently file the hard skin with an emery board to remove some of the dead skin. Don't use sharp items or acid containing dressings.