Bunion pain may be caused by trauma, gout, deformity and other reasons. 1. Trauma: It may be a localized injury caused by kicking, spraining, smashing, knocking, etc., which may stimulate the pain in the big toe. 2. Gout: It is a heterogeneous group of diseases caused by impaired purine metabolism, excessive production of uric acid and/or decreased excretion of uric acid, resulting in increased uric acid concentration in the blood. Acute attacks, patients may appear foot thumb pain phenomenon. 3. Deformity: it may be due to genetic factors, or wearing shoes too tight, high heels and other factors leading to the deformity of the foot thumb. Causes pain. Foot big toe pain may also be caused by other reasons, such as onychomycosis, etc., Jian timely go to the hospital, follow the doctor’s instructions for treatment, to avoid delaying the condition.