What does it mean to have brachial plexus palsy and peripheral nerve injury?

Nerve injury: The brachial plexus is the portion of the nerves in our upper extremities after they have branched off the spinal cord. They are located around the shoulder and armpit regions. These nerves then travel into the forearm and hand to allow us to feel objects and move our muscles. Injuries to the brachial plexus can results in weakness and numbness to the upper extremity.

Related: Peripheral nerve damage is damage to both the nerve and the surrounding tissue since the nervous system is characterized by dependence of neurons on their supporting glia. Brachial plexus dysfunction (brachial plexopathy) is a form of peripheral neuropathy. It occurs when there is damage to the brachial plexus, an area where a nerve bundle from the spinal cord splits into each arm nerve.