Symptoms may include:

Early:

• Sense early on that "something is wrong"
• Poor memory; inability to remember current events
• Finding it more difficult to balance the checkbook, buy groceries, finish sentences while talking, or remembering the way home.
• Emotional outbursts, poor decision-making skills, and frequent mood changes.

Advanced:

• Unable to complete activities of daily living like bathing, dressing or feeding self
• Change in sleep habits; wandering about during the night (Sundowner's syndrome)
• Lack of interest in sex
• Anxious and defensive when confronted with memory loss
• Unable to recognize spouse, family members or friends

Late:

• Total confusion, loss of memory, and incoherent speech
• Incontinence of bladder and bowel
• Hostile, confrontational, depressed, fearful and frustrated