Neuropathic pain, also known as nerve pain, is a type of chronic pain that occurs when nerves in the central nervous system become injured or damaged. It is a complex, chronic pain state that is usually accompanied by tissue injury. With neuropathic pain, the nerve fibers themselves might be damaged, dysfunctional, or injured. These damaged nerve fibers send incorrect signals to other pain centers. The impact of a nerve fiber injury includes a change in nerve function both at the site of injury and areas around the injury.