Myelin is a material that insulates and protects the spinal cord and brain’s nerve cells or neurons. Myelin is crucial for the overall health of your brain.
Progressive multifocal leukoencephalopathy (PML) attacks the white matter of the myelin which is the oily covering of the nerve cells in the brain and spinal cord.
PML is a rare, slowly progressive disease of the nervous system. It is caused by a viral infection of oligodendrocytes. These are cells that produce myelin.