A bunion is a bony bump that forms on the joint at the base of the big toe. It occurs when the big toe is pushed inward towards the other toes, causing the joint to stick out. This can cause the surrounding skin and tissue to become swollen and painful. Bunions can be caused by a variety of factors, including genetics, certain types of footwear, and certain medical conditions such as rheumatoid arthritis. They can also be caused by injury or overuse. Treatment options for bunions include wearing comfortable shoes, taking over-the-counter pain medication, using a bunion pad or wrap, and in severe cases, surgery may be required. It's important to consult a doctor or a podiatrist for proper diagnosis and treatment.