Define Autoimmunity - Videos

Rituxan: NHL Treatment

A California man is about to embark on a mission to save his life and help science in the process. He has a life-threatening skin disease, and with time and options running out, he just received some encouraging news. NBC's Rory Devine explains.

Multiple sclerosis (MS) isn't fully understood, but many believe it's an autoimmune disease that affects the central nervous system, or CNS. The CNS includes the brain, the spinal cord, and the optic nerves, and it's surrounded by a fatty tissue called...

Check out this 30-second PSA for the Lupus Foundation of America. Sarah Chalke from TV's "Scrubs" narrates.

A new study finds smoking appears to cause brain injuries in people with multiple sclerosis.