The causes of bunion pain include gout, corns and onychomycosis. 1. Gout: If the patient himself suffers from gout, when the patient’s body has too much uric acid crystals, gout stones can be formed in the toe area, triggering the patient’s big toe pain symptoms. 2. Corns: If the patient wears inappropriate shoes and walks in an incorrect posture, the skin of the feet will be subjected to long-term pressure and friction, which will lead to limited hyperplastic damage to the toes, resulting in pain in the big toe of the patient’s feet. 3. Inguinitis: Due to bacterial, fungal, viral and other pathogenic microbial infections, the patient’s toenails become infected with inflammation, and the toenails may even become embedded in the flesh of the toes, thus triggering the symptoms of pain in the patient’s big toe. If the patient has symptoms of bunion pain, it is recommended that the patient go to the hospital in a timely manner, complete the relevant examinations, clarify the cause of the disease, and comply with the doctor’s instructions for treatment.