Warning Signs Of Progressive Multifocal Leukoencephalopathy

Progressive multifocal leukoencephalopathy (PML), a type of demyelination, is a disease caused by the JC virus that occurs when the body is unable to fight against disease the way it normally should. This disease attacks the brain and causes damage to the white matter in the brain. White matter is comprised of the specialized cells responsible for making the myelin that covers the nerves. When myelin is not covering the nerves, several things can occur because the nerves cannot send signals properly. Individuals who have a weakened immune system are more susceptible to developing PML.