A bunion is an enlargement of the joint at the base of the big toe—the metatarsophalangeal (MTP) joint—that forms when the bone or tissue at the big toe joint moves out of place. This forces the toe to bend toward the others, causing an often painful lump of bone on the foot. Since this joint carries a lot of the body’s weight while walking, bunions can cause extreme pain if left untreated. The MTP joint itself may become stiff and sore, making even the wearing of shoes difficult or impossible. Bunions– from the Latin "bunio," meaning enlargement–can also occur on the outside of the foot along the little toe, where it is called a "bunionette" or "tailor’s bunion."

	Development of a firm bump on the outside edge of the foot, at the base of the big toe.
	Redness, swelling, or pain at or near the MTP joint.
	Corns or other irritations caused by the overlap of the first and second toes.
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	Restricted or painful motion of the big toe.

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