Itchy bumps have appeared on the top of my foot and they burn and itch. what are they, how can i treat them?

Contact allergy: to shoe material with chromate being a likely allergen. Do you have the same problem with non-leather shoes (takes at least a week to tell)? Consult a dermatologist or allergist . In the meanwhile try wearing non-leather shoes or a thick sock with leather shoes. Apply topical hydrocortisone cream . If problem persists, see derm or allergist.