What is ALS?
Amyotrophic Lateral Sclerosis (ALS) is a specific type of MND that affects both upper and lower motor neurones, causing muscle weakness and eventual paralysis.
ALS is also known in the USA as Lou Gehrig’s disease.
Nearly 90% of patients with MND have the mixed ALS form of the disease, so that the terms MND and ALS are commonly used to mean the same thing.
Within this large ALS group, there is still a huge variation in the way the disease presents and progresses, regardless of where it first begins.