symptoms of brain spinal cord and nerve disorders
brain, spinal cord, and nerve disorders
Numbness
Numbness results when one part of the pathway for sensation malfunctions, usually because of a disorder or drug. Many conditions can cause numbness in various ways. For example, they may Reduce or block the blood supply to nerves in the body, as occurs in Overview of Vasculitis , or in the brain, as results from Damage part of the pathway for sensation, as may result from Injuries of the Spinal Cord and Vertebrae or from Put pressure on (compress) part of the pathway Infect a nerve, as occurs in Leprosy , Cause nerves in part of the pathway to become inflamed and lose their outer layer (called demyelination), as occurs in Multiple Sclerosis (MS) or Cause metabolic abnormalities, which may occur in Diabetes Mellitus (DM) , Pressure on different parts of the pathway has various causes, depending on which part of the pathway is affected (see table), as in the following: Compression of the Spinal Cord : Repeating specific movements over and over, causing swelling, as occurs in Pressure on spinal nerve roots: Herniated Disk in the spine, Compression of the Spinal Cord : A tumor, an injury, or a pocket of blood (hematoma) or pus (abscess) near the spinal cord 