Imagine you're a young adult who survived the infuenza pandemic of 1918. You got sick, but only developed mild illness and made a complete recovery. 20 years later while eating at the dinner table you drop your fork and are unable to pick it up ever again. Your loved ones take you to doctors who are baffled by your symptoms. You are conscious and aware, but unable to move or speak. 

You overhear the diagnosis, Encephalitis Lethargica...