Hand swelling may be caused by physiological factors, or by diseases such as cervical spondylosis that compresses the nerves and arthritis. It may also be caused by cardiac and renal insufficiency, blood clots, trauma and other reasons. 1. Physiological factors: If you have been overworked in recent times, or if you are on an intravenous drip and have poor blood circulation, the symptoms of hand swelling may occur. 2. Cervical spondylosis: the disease is caused by cervical disc herniation and nerve root compression, which can lead to symptoms such as swelling and numbness in one or both hands. Generally, you can go to the hospital for targeted diagnosis through brachial plexus traction test and cervical spine MRI. 3. Arthritis: the more common is finger arthritis, when a series of inflammation of the joints of the hand, such as synovitis, rheumatoid arthritis or degenerative osteoarthritis and other diseases, due to the stimulation of inflammation of the joints of the hand will be swollen, stiff, and in severe cases, it will be difficult to bend, stretching and other symptoms. In addition, it may also be caused by cardiac and renal insufficiency, blood clots, trauma, etc. Therefore, it is necessary to consult a doctor in a timely manner to clarify the cause of the disease and target treatment and therapy.