Some signs of memory loss typically have been blown away as a regular part of the aging process, but when the problems start to regularly affect the person's level of functioning and it becomes more difficult to remember recently learned facts or retain new information and details about their own life history or the inability to recall vocabulary, it becomes serious.

Some report there are changes in behavior such as possibly having hallucinations, delusios, or paranoia. Some changes in sleep patterns could also be a sign.