Left wrist pain has the same cause as right wrist pain and is not specific. Common causes of wrist pain include chronic strain, osteoarthritis, tenosynovitis, and so on. 1. Chronic strain: Long-term work with the mouse and keyboard or long-term ball games may cause chronic strain on the wrist, resulting in aseptic inflammation of the soft tissue tendons or joint capsule, causing pain in the wrist. 2. Osteoarthritis: Osteoarthritis caused by degeneration of articular cartilage may also cause wrist pain. 3. Tenosynovitis: Tenosynovitis can be characterized by wrist pain, as well as finger popping and pain. If the wrist pain is severe or the pain can not be relieved, you should go to the hospital in time to improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.