1. Memory loss that disrupts daily life
One of the most common signs of Alzheimer's, especially in the early stages, is forgetting recently learned information, forgetting important dates or events or asking for the same information over and over.
Sometimes forgetting names or appointments, but remembering them later.
2. Challenges in planning or solving problems
Some people might experience changes in their ability to develop and follow a plan or work with numbers. They may have difficulty concentrating and take much longer to do things like cook a familiar recipe or manage their bills.
Making occasional errors when balancing a checkbook.
3. Difficulty completing familiar tasks at home, at work or at leisure
People with Alzheimer's often find it hard to complete daily tasks, such as driving to a familiar location, managing a budget at work or remembering the rules of a favorite game.
Occasionally needing help to use the settings on a microwave or to record a television show.
4. Confusion with time or place
People with Alzheimer's can lose track of dates, seasons and the passage of time. This can include forgetting where they are or having trouble understanding something that isn't happening immediately.
Getting confused about the day of the week but figuring it out later.
5. Trouble understanding visual images and spatial relationships
Having vision or perception problems is a sign of Alzheimer's for some, such as difficulty reading, judging distance or passing a mirror and thinking someone else is in a room.
Vision changes related to cataracts.
6. New problems with words in speaking or writing
People with Alzheimer's might have trouble following or joining a conversation. They might struggle with vocabulary, calling things by the wrong name (e.g., calling a watch a “hand clock”).
Sometimes having trouble finding the right word.
7. Misplacing things and losing the ability to retrace steps
A person with Alzheimer's disease might put things in unusual places or lose things and be unable to go back over their steps to find them again. Sometimes, they might accuse others of stealing. This may occur more frequently over time.
Misplacing things from time to time, such as a pair of glasses or the remote control.
8. Decreased or poor judgment
People with Alzheimer's might experience changes in judgment or decision making, such as poor judgment when dealing with money, giving large amounts to telemarketers. They might pay less attention to grooming or keeping themselves clean.
Making a bad decision once in a while.
9. Withdrawal from work or social activities
A person with Alzheimer's might start to remove themselves from hobbies, social activities, work projects or sports. They might also avoid being social because of the changes they have experienced.
Sometimes feeling weary of work, family and social obligations.
10. Changes in mood and personality
The mood and personalities of people with Alzheimer's can change, and they might become confused, suspicious, depressed, fearful or anxious. They might be easily upset when they are out of their comfort zone.
Developing very specific ways of doing things and becoming irritable when a routine is disrupted.
Source: The Alzheimer's Association