13 Key Signs of Alzheimer's You Should Know

7. Changes in mood and personality

Alzheimer's alters the balance of chemicals in the brain, and this results in behavioral changes, including depression and mood swings. Some individuals become irritable and aggressive. As the disease progresses, most patients tend to withdrawal from and lose interest in social interaction and may become stubborn or uncooperative in interacting with them, especially if they become paranoid. Many become preoccupied with thinking someone has stolen their property. As the disease progresses, interactions become increasingly difficult.