Paralysis
Also called: Hemiplegia.
What is Paralysis?
Paralysis is the loss of muscle function in part of your body. It happens when something goes wrong with the way messages pass between your brain and muscles. Paralysis can be complete or partial. It can occur on one or both sides of your body. It can also occur in just one area, or it can be widespread. Paralysis of the lower half of your body, including both legs, is called paraplegia. Paralysis of the arms and legs is quadriplegia. Most paralysis is due to strokes or injuries such as spinal cord injury or a broken neck. Other causes of paralysis include: Nerve diseases such as amyotrophic lateral sclerosis Autoimmune diseases such as Guillain-Barre syndrome Bell's palsy, which affects muscles in the face Polio used to be a cause of paralysis, but polio no longer occurs in the U.S.
Related topics
Source: MedlinePlus, U.S. National Library of Medicine (NIH) — read the full NIH article.
Educational summary of an authoritative source — not medical advice. Please see your doctor for diagnosis, and seek urgent care for any severe or sudden symptoms.