What is paralysis?

Paralysis occurs when you’re unable to make voluntary muscle movements. A nervous system problem causes paralysis.

Uninjured nerves send signals to muscles. Those signals make muscles move. When you’re paralyzed, or have paralysis, you can’t move certain parts of your body.

What is the main cause of paralysis?

More often, a traumatic injury or medical condition damages muscle and nerve function. Strokes and spinal cord injuries are the top causes of paralysis.