Alzheimer’s disease – Symptoms and causes – Mayo Clinic

Brain changes that occur in Alzheimer’s disease can affect moods and behaviors. Problems may include the following:

Depression

Apathy

Social withdrawal

Mood swings

Distrust in others

Irritability and aggressiveness

Changes in sleeping habits

Wandering

Loss of inhibitions

Delusions, such as believing something has been stolen

Alzheimer’s disease – Symptoms and causes – Mayo Clinic