Amyotrophic lateral sclerosis, is a progressive nervous system disorder that affects nerve cells in the brain and spinal cord, causing loss of muscle control. Signs and symptoms of amyotrophic lateral sclerosis (ALS) vary greatly from person to person. If you or anyone you know is experiencing signs of Amyotrophic Lateral Sclerosis, contact our neurologists immediately. Call us Specialty Care Clinics on 469-833-2927.