Pain on the outside of the little toe of the foot may be caused by gout, infection, trauma, tuberculosis, tumor, toe neuritis and toe neuroma. 1. Gout: When gout patients have too much uric acid and the symptoms involve the joints of the toes, it may cause the symptom of pain on the outside of the little toe of the foot. 2. Infection: If the pain is accompanied by local redness, swelling and heat pain, it can be considered to be caused by infection. 3. Tuberculosis: If the patient suffers from tuberculosis and it has metastasized to the bones or soft tissues of the little toe, it may also cause pain on the outside of the little toe. 4. Tumor: If there is a tumor in the tissues of the little toe, pain on the outside of the little toe can also occur. 5. Trauma: Trauma such as collision can lead to invisible or insignificant damage to the outside of the bunion, which in turn can cause pain. 6. Toe neuritis and toe neuroma: When the nerves in the bunion become diseased, toe neuritis and toe neuroma can also cause pain on the outside of the toe. There are many factors that can cause pain on the outside of the bunion. If the pain cannot be relieved or is unbearable, the patient should go to the hospital in time to find out the cause of the pain and consult a doctor.