Sclerosis (nervous system)

In medicine, sclerosis (also spelled sclerosus in the names of a some disorders) refers to the stiffening of a structure, usually caused by a replacement of the normal organ-specific tissue with connective tissue.

Types include:
 * Amyotrophic lateral sclerosis, sometimes known as Lou Gehrig's disease, a progressive, incurable, usually fatal disease of motor neurons.


 * Hippocampal sclerosis, a brain damage often seen in individuals with temporal lobe epilepsy.