Pain at the middle finger joint of the right hand should not only be alert to four diseases, but may be due to a variety of factors. First of all, you should consider whether it is caused by an external impact in your life. If the pain is relatively mild and there is no other discomfort, it can usually be relieved within a short period of time, but if there is a fracture that may be accompanied by severe pain and swelling, you should promptly go to the hospital for examination and treatment. In addition, it may also be caused by the following diseases, such as flexor tendon tenosynovitis, synovitis, gouty arthritis, rheumatism or rheumatoid disease, etc. 1, chronic strain: triggering factors are mostly related to their own overwork, carrying too much weight, chronic strain of the right middle finger will also appear at the joint pain symptoms, may also be accompanied by joint deformity, swelling, finger numbness and other discomfort; 2, flexor tendon tenosynovitis. The triggering factors are mostly related to overworking of the fingers, and the lesion site in the right middle finger can lead to pain in the area, accompanied by stiffness and limited activity; 3, synovitis: the triggering factors are mostly related to cold hands, keyboarding, and typing more. When there is synovitis in the middle finger of the right hand, this condition will occur, along with pain, swelling, fluid accumulation and increased epidermal temperature in the right middle finger joint; 4. Gouty arthritis: triggering factors are mostly related to joint injury, improper eating and medications, such as trauma, high purine diet, heavy alcohol consumption and diuretics. The typical manifestations of gout attacks are redness, swelling, heat and pain in the local joints, mostly in the early morning and midnight attacks, and acute attacks that do not heal can lead to joint function limitations and joint deformities. These diseases mainly attack the joints of the hands and wrists, mostly morning joint stiffness, swelling, pain, etc., serious cases will appear in the joint swan neck-like deformity, button-like deformity, etc., may not only appear in the right middle finger, other fingers will also be involved, once found it is recommended to promptly seek medical advice; 6, osteoarthritis: triggering factors are mostly related to local finger injuries, long-term excessive activity. Local osteoarthritis is mostly based on joint cartilage damage, such as the involvement of the middle finger of the right hand, will cause pain, but also accompanied by joint weakness, muscle atrophy, joint activity will appear creaking, etc.; 7, other: such as the relatively rare finger joint tumor, right middle finger infection, etc., will also cause this condition. As can be seen, there are many causes of this condition, and it is recommended to seek timely medical attention for detailed examination, such as X-rays, blood tests, etc. In addition, it is recommended to derive good daily habits, quit smoking, quit drinking, eat a light diet, eat more vegetables and fruits, control weight, etc., which can help prevent joint lesions.