Bunions are bony bumps that form at the base of your big toe, where they connect to your foot. They cause the big toe to angle inwards towards the other toes, often creating a visible deformity. The exact cause of bunions is unknown, but several factors can contribute to their development.
Genetics plays a role, as bunions tend to run in families. People with certain foot types, such as flat feet or a splayed forefoot, may be more prone to bunions. Mechanical stress from improper footwear can also worsen bunion between toes.
Shoes that are too tight, narrow in the toe box, or have high heels can crowd the toes and push the big toe out of alignment. Additionally, certain medical conditions like rheumatoid arthritis or inflammatory arthritis can contribute to bunion development by causing inflammation and joint deformity.