A bunion is an unnatural, bony hump that forms at the base of the big toe where it attaches to the foot. Often, the big toe deviates toward the second toe. When this occurs, the base of the big toe pushes outward on the first metatarsal bone — which is the bone directly behind the big toe — forming a bunion. 

What Causes a Bunion? 

• There are many factors which could predispose you to the development of bunions, and your podiatrist will discuss this with you at your consultation. 
• Bunions are more common in women than men, and there is a popular misconception that high heels cause bunions. Genetic factors and bone abnormalities are the most common causes. However, you can alleviate the symptoms by wearing loser fitting shoes or dispensing with shoes altogether.