An injury of the median nerve at upper arm level, left arm, can cause various symptoms and can have different causes. The median nerve is one of the three major nerves in the arm, responsible for controlling the muscles and providing sensation to the forearm and hand. When this nerve is injured, it can cause pain, weakness, numbness, and other symptoms.
If you are experiencing symptoms of an injury to the median nerve at the upper arm level, left arm, it is important to seek medical attention promptly to determine the underlying cause and to receive appropriate treatment. With proper diagnosis and treatment, many people are able to recover from this type of injury and regain full function of their affected arm.