Bunion is more common in females. A Bunion can develop due to multiple reasons. Main reason is wearing tight, narrow and high heel shoes. Other reasons include (but not limited to) Rheumatoid arthritis or secondary to other foot deformities.
When bunion progress, the big toe starts pushing against the 2nd toe and can form Hammer toe deformities of the lesser toes.
Bunions disturb the mechanics of the foot and change the pressure points at the sole of the foot. Patients will sometimes experience pain in the sole of the foot at the base of the lesser toes. This is called Metatarsalgia.
A Bunion of the pinky toe is called Bunionette