If the pain in the joint of the big toe is accompanied by redness and swelling as well as the formation of gout stones, it is considered to be caused by gout, so it is necessary to register with the Department of Rheumatology and Immunology for a hospital consultation. Second, if the pain is caused by a bunion, the pain at the first metacarpophalangeal joint on the inside of the foot can occur, along with swelling and deformity of the big toe, so you should consult with the orthopedic department, check the foot x-ray at an early stage, and take conservative brace treatment or surgery according to the condition.