This common condition whereby the big toe is angled excessively towards the second toe.
The bunion is a symptoms of this deformity and demonstrates a bony prominence to the side of the big toe. This can also form a large sac of fluid, known as a bursa, which can become inflamed and sore at this joint
Aside from a genetic propensity, wearing tight, narrow shoes might cause bunions and/or can make them worse.
Bunions can also develop from altered stresses to your foot and can also co-exist with arthritis.