Finger bending pain may be caused by rheumatoid arthritis, tenosynovitis, gout, etc. The causes are different and the treatments are different. 1. Rheumatoid arthritis: Rheumatoid arthritis is an autoimmune disease with arthritis as its main manifestation. The fingers of patients with this disease may have swan-neck-like deformities, which may also be accompanied by morning stiffness, swelling and pain. For treatment, drugs such as ibuprofen and diclofenac sodium can be used for pain relief, and drugs such as methotrexate can also be used for treatment. 2. Tenosynovitis: Tenosynovitis is an inflammatory reaction of the tendon sheath tissue caused by excessive friction between the tendon and tendon sheath, etc. Patients with this disease may also have the symptom of pain when bending the fingers. Treatment should be based on rest, dexamethasone, procaine intratendinous injection can be used, but also tendon sheath incision decompression surgery to treat. 3. Gout: gout patients due to urate deposition in the joint cavity, can also lead to the symptoms of finger bending pain, treatment can use colchicine, indomethacin, dexamethasone and other drugs for treatment. Other diseases can also lead to the symptoms of finger bending pain, if the symptoms continue to be unrelieved, you should consult a doctor in time to avoid delaying the condition.