- A fact sheet on amyotrophic lateral sclerosis (ALS) prepared by the National Institute of Neurological Disorders and Stroke (NINDS).www.ninds.nih.gov/health_and_medical/pubs/als.htm
- Primary Lateral Sclerosis - Primary lateral sclerosis (PLS) is a progressive, degenerative disease of upper motor neurons characterized by progressive spasticity (ie, stiffness). It affects the lower extremities, trunk, upper extremities, and bulbar muscles (usually in that order).Classification of motor neuronsThe cell bodies (soma) of lower motor neurons reside in the spinal cord or the brain ...www.emedicine.com/NEURO/topic324.htm
- Primary lateral sclerosis (PLS) information sheet compiled by the National Institute of Neurological Disorders and Stroke (NINDS).www.ninds.nih.gov/health_and_medical/disorders/primary_lateral_sclerosis.htm
- Monomelic amyotrophy (Benign Focal Amyotrophy) information sheet compiled by the National Institute of Neurological Disorders and Stroke (NINDS).www.ninds.nih.gov/health_and_medical/disorders/monomelic_amyotrophy.htm