Primary lateral sclerosis (PLS) and amyotrophic lateral sclerosis (ALS) are neurodegenerative diseases. PLS typically develops slowly, while ALS rapidly affects mobility and can become fatal.
Primary lateral sclerosis (PLS) is a motor neuron disease variation of ALS (amyotrophic lateral sclerosis) but far more rare. PLS refers to patients who seem to have disruptions with only upper motor ...