Multiple sclerosis (MS) is a complex neurological condition for which there is currently no cure.
MS is associated with loss of myelin, which is a sheath that forms around the nerves. Less myelin leads to disruptions in the transmission of electrical impulses to and from the brain, causing MS symptoms.
The sites where the myelin is lost appear as scars. This is why multiple sclerosis means, literally, many scars.
Find more MS facts here.
Common MS symptoms include: blurred vision, extreme fatigue, pain, numbness in legs and hands, loss of movement and speech problems.