Short answer · Medically reviewed summary · Last updated: 2026-04-08
Transverse myelitis is a rare neurological condition caused by inflammation across both sides of one level of the spinal cord, which disrupts the communication between the nerves in the spinal cord and the rest of the body. This inflammation often leads to a variety of symptoms, including muscle weakness, pain, sensory changes, and bladder or bowel dysfunction, requiring prompt medical evaluation and management. What exactly happens in the body during Transverse myelitis? Transverse myelitis occurs when the body's immune system mistakenly attacks the spinal cord, causing damage to the myelin—the protective insulating sheath that covers nerve cell fibers.
6 people with Transverse myelitis have shared their first-person experience on this question at DiseaseMaps.
Transverse myelitis is a rare neurological condition caused by inflammation across both sides of one level of the spinal cord, which disrupts the communication between the nerves in the spinal cord and the rest of the body. This inflammation often leads to a variety of symptoms, including muscle weakness, pain, sensory changes, and bladder or bowel dysfunction, requiring prompt medical evaluation and management.
Transverse myelitis occurs when the body's immune system mistakenly attacks the spinal cord, causing damage to the myelin—the protective insulating sheath that covers nerve cell fibers. Because the spinal cord serves as the main "highway" for messages between the brain and the body, this damage blocks or interrupts nerve signals. This process affects multiple body systems, most notably the nervous system, which controls movement and sensation. When the inflammation occurs, it frequently impacts the muscular system, leading to weakness or paralysis, and the urinary and digestive systems, causing loss of bladder and bowel control. The circulatory, respiratory, and reproductive systems can also be indirectly affected due to nerve signal interruption or the systemic inflammatory response.
Transverse myelitis is considered a rare disorder, with an estimated annual incidence of 1 to 5 new cases per million people worldwide. It can affect individuals of any age, gender, or ethnic background; however, there are two distinct peaks in age of onset: between 10 and 19 years and between 30 and 39 years. Currently, at DiseaseMaps.org, 798 people with Transverse myelitis have joined our community to share their personal experiences and support one another through the diagnostic and recovery journey.
Because the spinal cord controls so many bodily functions, the symptoms of Transverse myelitis can vary significantly depending on which segment of the spinal cord is inflamed. Common manifestations include:
Transverse myelitis is often a "diagnosis of exclusion," meaning doctors must rule out other causes of spinal cord injury. Unlike spinal cord compression caused by a tumor or injury, the inflammation in Transverse myelitis is typically autoimmune or post-infectious in nature. It is distinct from Multiple Sclerosis (MS) and Neuromyelitis Optica (NMO), though it can sometimes be the first clinical sign of these conditions. Clinical neurologists use MRI scans of the spine and lumbar punctures (spinal taps) to look for specific inflammatory markers that characterize this condition.
Medical disclaimer: This content is for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment; always seek the advice of your physician or other qualified health provider with any questions regarding a medical condition.