The disease can begin many years before it is eventually diagnosed.
In its early stages, short-
term memory loss is the most common symptom, often initially thought to be caused by aging or stress by the sufferer. Later symptoms include confusion, anger, mood swings, language breakdown, long-term memory loss, and the general withdrawal of the sufferer as his or her senses decline. Gradually the sufferer loses minor, and then major bodily functions, until death occurs.