amyotrophic lateral sclerosis 
noun [mass noun]
A form of motor neurone disease. Also called ALS, Lou Gehrig's disease.Patients with alcoholism, drug abuse, cancer, multiple sclerosis, psychosis, amyotrophic lateral sclerosis, parkinsonism, Down syndrome, liver or kidney disease, epilepsy and stroke were excluded from the study....
- The differential diagnosis includes any condition that can result in myelopathy, such as multiple sclerosis, amyotrophic lateral sclerosis and masses (such as metastatic tumors) that press on the spinal cord.
- Other conditions, such as multiple sclerosis, amyotrophic lateral sclerosis and tumors on the spinal cord, can cause similar symptoms.
Origin
Late 19th century: amyotrophic from amyotrophy.