A bunion usually refers to an outwardly turned toe, which over time may cause bunions, plantar fasciitis or osteoarthritis. A bunion is defined as a medial deviation of the first metatarsal bone and a lateral deviation of the first metatarsophalangeal joint. Common causes are mainly inappropriate shoes, women wear tight high heels, especially easy to cause. 1. Bunion: After a long time, it will cause redness, swelling and inflammation of the bunion, and pain on the inner side of the foot, which will affect your life. 2. Plantar fasciitis: When bunions are more serious, they can push the second toe upwards, easily causing plantar fasciitis and obvious pain when walking. 3. Osteoarthritis: Bunion is prone to osteoarthritis, which is a degeneration of the first metatarsophalangeal joint and often causes pain. If you have the above symptoms or are diagnosed with bunion, it is recommended that you go to the hospital in time for standardized treatment under the guidance of your doctor.