Amyotrophic lateral sclerosis (ALS), or Lou Gehrig???s disease, is a degenerative disease which degrades motor ... www.ninds.nih.gov/.../news_articles/ALS_RNA_lassos.htm - External Health LinksAmyotrophic lateral sclerosis Lou Gehrig's disease; ALS; Upper and lower motor neuron disease; Motor neuron disease www.nlm.nih.gov/medlineplus/ency/article/000688.htm - Medical EncyclopediaDextromethorphan