Finger inflexibility is often caused by physiological factors such as fatigue and sagging, but it may also be caused by pathological factors such as rheumatoid arthritis, stenosing tenosynovitis, cervical spondylosis and nerve injury. 1. Physiological factors: If you work manually for a long time, it can cause excessive strain on the finger joints, or prolonged arm sagging, causing blood return obstruction in the hand, which leads to swelling of the hand, stiffness of the finger joints, and inflexibility of the fingers. Appropriate rest, move the finger joints, change the posture and so on can relieve the symptoms. 2. Rheumatoid arthritis: It is a common autoimmune disease that occurs in women. Common symptoms include stiffness, swelling and pain in the fingers in the morning, mostly in both hands, which can be gradually relieved after activities. 3. Stenosing tenosynovitis: It is a sterile inflammation of the tendon sheaths, and the common symptoms are finger popping, pain, and limited joint movement. 4. Cervical spondylosis: because of the degenerative changes in the cervical spine and the narrowing of the vertebral artery affecting the blood supply to the upper limbs, it can also cause finger dexterity, accompanied by pain and numbness in the upper limbs. 5. Nerve injury: common median nerve, radial nerve, ulnar nerve injury, finger movement can be limited, hypesthesia and other symptoms. Finger inflexibility is caused by a variety of reasons, may also be related to gout, bone fracture and other diseases, if the symptoms continue to be unrelieved, it is recommended to consult a doctor in a timely manner, to clarify the cause of the disease, for targeted treatment.