Feeling stiff and inflexible fingers may be caused by physiological factors such as exertion and sagging, or pathological factors such as tenosynovitis, gout and rheumatoid arthritis. 1. Physiological factors: due to prolonged manual labor or prolonged arm sagging and other reasons, can cause finger stiffness and inflexibility, give appropriate rest, avoid finger strain, or change posture, activity massage of the hand muscles, can be gradually relieved. 2. Tenosynovitis: Tenosynovitis is an acute and chronic inflammatory reaction that occurs in the tendon sheaths and is common among manual laborers. The cause of the disease is related to chronic strain and trauma, and patients will experience local pain and impaired movement of the affected joints, which will lead to stiffness and inflexibility of the fingers. 3. Gout: Gout is joint pain caused by hyperuricemia, the trigger is related to drugs, diet, alcohol and other factors, the patient will have multiple joint pain, but also joint redness and swelling and other symptoms. Urate crystals are constantly deposited around the joints, which can lead to limited joint movement, resulting in stiff and inflexible fingers. 4. Rheumatoid arthritis: mainly due to autoimmune, hereditary, infection and other factors, the patient will appear morning stiffness, the most common parts are the wrist, palm, finger and so on. For patients with stiff and inflexible fingers, if they can not be relieved on their own or accompanied by other symptoms, it is recommended to consult a doctor in time for examination and targeted treatment after a clear diagnosis.