A chronic, progressive disease marked by gradual degeneration of the nerve cells in the central nervous system that control voluntary muscle movement. The disorder causes muscle weakness and atrophy; symptoms commonly appear in middle to late adulthood, with death in
two to five years. The cause is unknown, and there is no known cure. Also called Lou Gehrig's Disease, and Motor Neuron Disease.
 A Without
 Myo Muscle
 Trophic Nourishment
 Lateral Side (of spinal cord)
 Sclerosis Hardening, disease, destruction