I met Tony in 2001 when he was sent to me with severe muscle weakness. Confined to a wheelchair and unable to care for himself, Tony had been told he had amyotrophic lateral sclerosis, or ALS, a fatal neurodegenerative disorder. It turned out Tony actually had Lambert-Eaton myasthenic syndrome, a rare but treatable neuromuscular disorder. After starting the drug 3,4 diaminopyridine (3,4 DAP), he regained most of his strength and, significantly, his ability to walk and care for himself.