A bunion is an enlargement of bone or tissue around the joint at the base of the big toe. The big toe may turn toward the second toe. The tissues around the joint may be swollen and tender.
A bony bump at the base of the little toe is called a bunionette or tailor's bunion. The little toe also bends inward, and the joint swells or enlarges.
You may get bunions if:
All of these may put pressure on the big toe joint. Over time, the constant pressure forces the big toe out of alignment, bending it toward the other toes.