Have you ever put on a pair of second-hand shoes and then noticed a small yellow bump forming on your toe? It can feel uncomfortable and even worrying at first, but in most cases it’s harmless. That yellow bump is usually a corn or callus—a patch of thickened skin that develops when your body tries to protect itself from repeated rubbing or pressure.
Why Does This Happen?
Pre-owned shoes are a common cause because they rarely fit a new wearer perfectly. Over time, shoes mold to the original owner’s foot shape, creating pressure spots, seams, or worn areas that don’t align with your toes. This mismatch can lead to ongoing irritation, such as:
Friction: Your toe repeatedly rubs against tight, narrow, or stiff areas inside the shoe.
