There are several causes of swelling and pain in the middle finger of the right hand, and different treatments are available for different reasons: 1. osteoarthritis of the fingers: as the joints degenerate with age, osteoarthritis of the finger joints can occur, or traumatic arthritis can be caused by trauma, which can lead to swelling and pain in the joints, accompanied by bone redundancy; 2. gout: when gout involves the finger joints, there will be swelling and pain in the joints. Swelling and pain, can be accompanied by redness of the skin, increased skin temperature, serious cases will have the formation of gout stone, then to lower uric acid treatment, serious cases may also need surgery to remove; 3, rheumatoid: can involve small joints appear finger joint pain, often accompanied by finger deformity, then to carry out blood tests, anti-rheumatoid treatment; 4, stenosing tenosynovitis: fingers with stenosing tenosynovitis can also appear Swelling and pain in the joints, pain on the palm side of the fingers, then early physical therapy, oral medication, closed therapy, and in severe cases, surgery.