Related Conditions

Amyotrophic lateral sclerosis (ALS)

Amyotrophic lateral sclerosis, or ALS, is a disease in which certain nerve cells in the brain and spinal cord slowly die. These nerve cells are...

Primary lateral sclerosis

Primary lateral sclerosis (PLS) is a rare, neuromuscular disorder that affects the central motor neurons and is characterized by painless but...

Progressive muscular atrophy

Progressive muscular atrophy is a rare type of ALS which affects only the lower motor neurons.  (ALS affects both the upper and lower motor neurons.)