The symptoms of hand swelling in the morning can be caused by physiological factors such as incorrect sleeping posture, but also due to pathological factors such as cervical spondylosis, tenosynovitis, carpal tunnel syndrome, rheumatoid arthritis and so on. 1. Physiological reasons: sleeping in an improper posture, often with the hand pressure on the arm, will make the blood circulation of the hand is impaired and the phenomenon of early morning swelling of the hand. 2. Pathological factors: morning hand swelling can be caused by a variety of diseases. (1) cervical spondylosis: cervical spine degenerative changes will compress the local nerves and blood vessels, so that the blood vessels innervated by the hand nerves are affected by vasospasm, resulting in impaired blood circulation in the hand and hand swelling in the morning, numbness symptoms. (2) Tenosynovitis: excessive fatigue of the fingers will cause the tendons and tendon sheaths to repeatedly rub against each other, resulting in aseptic inflammation and swelling of the hands. (3) Carpal Tunnel Syndrome: Excessive use of the wrist for work will cause the median nerve in the carpal tunnel to be subjected to greater pressure and compression, resulting in numbness and swelling of the hands. (4) Rheumatoid arthritis: this disease often erodes from the synovium to the articular cartilage, causing swelling of the joints, which in turn causes the symptom of swollen hands in the morning. Therefore, if you wake up in the morning and find the phenomenon of hand swelling, you should go to the orthopedic department of the hospital in a timely manner in order to clarify the cause of the disease and then actively treat the cause.