Multiple Sclerosis (MS) is a chronic inflammatory condition affecting the central nervous system, which includes the brain and spinal cord.
It's largely considered an autoimmune disorder, meaning the body's immune system mistakenly attacks its own tissues.
Because the exact cause of MS isn't fully understood, preventing it isn't currently possible, and there's no known cure.
MS is the most common autoimmune disorder impacting the central nervous system, affecting approximately 2 million people worldwide as of 2008.