Alzheimer's Disease
To dream of Alzheimer's disease represents feelings about a worsening memory, identity, and ability to manage relationships that doesn't let you believe in yourself like you usually do ever again. Anxiety or feeling stupid about yourself not having a sharp memory when it's important. Embarrassing yourself with deteriorating skills or memory. Concerns with other people noticing your memory or skills are not as good as they used to be. Concerns about forgetfulness, confusion, or a decline in mental clarity while not wanting to speak about it.
Alternatively, Alzheimer's disease may reflect your surprise at how forgetful someone you know is.
Example: A woman dreamed of her son having Alzheimer's disease. In waking life, she was about to enroll in a doctoral program and was concerned that she had forgotten too many things that other people in the same program remembered easily. She had anxiety that the program was beyond her capabilities. In this case, the son having Alzheimer's disease may have reflected her feelings about the potential for her future being embarrassed by her worsening memory with schoolwork.
Example 2: A person dreamed of going into a basement and suddenly losing their sense of self, similar to dementia or Alzheimer's disease. In waking life, they recently moved to another US State for a job. They hated the weather and missed their friends and family and wanted to move back. In this case, experiencing dementia or Alzheimer's disease when going into the basement may have reflected the person's feelings about their worsening memory, identity, and ability to manage relationships during a serious problem because moving forced them to be alone and not believe in themself like they usually do ever again.