A bunion is a deformity of the big toe joint. As the normally straight big toe starts to point in the direction of the little toe, a bump develops on the side of the foot. The same deformity can occur at the little toe joint. Then it’s called a Tailor’s bunion. The bump is often irritated by shoes and the big toe joint often aches. The big toe may even push the second toe into the top of the shoe until it is irritated too.