By Eric Rohr, 9:21 am on January 13, 2026
Amyotrophic lateral sclerosis (ALS) isn’t a type of multiple sclerosis (MS). Although both affect the nervous system and can cause muscle weakness, they’re distinct diseases with different causes, progression patterns, and treatment approaches. MS is an autoimmune disorder in which the immune system attacks the myelin sheath surrounding nerves, often causing relapses and remissions. ALS, on the other hand, is…