Transverse myelitis is an inflammation of both sides of one section of the spinal cord. This neurological disorder often damages the insulating material covering nerve cell fibers (myelin). Transverse myelitis interrupts the messages that the spinal cord nerves send throughout the body. This can cause pain, muscle weakness, paralysis, sensory problems, or bladder and bowel dysfunction.
Several factors can cause transverse myelitis, including infections and immune system disorders that attack the body's tissues. It could also be caused by other myelin disorders, such as multiple sclerosis.