10 Signs of Dementia You Should Know About

According to 2023 figures from the Alzheimer’s Association, an estimated 6.7 million Americans are living with Alzheimer’s disease, accounting for 60 to 80 percent of dementia cases, though many experts say that number is probably higher. Globally, dementia is the seventh leading cause of death, according to World Health Organization estimates.

If someone is showing signs of dementia, it’s important to see a medical expert who can conduct tests and come up with a diagnosis. Several often treatable conditions — from common infections to a vitamin deficiency — can cause dementia-like symptoms, so it’s necessary to rule them out first. 

If it is dementia, you’ll want to plan how you will manage care or pursue treatment, especially as the condition progresses.

10 warning signs of dementia 

Here are some symptoms to watch for. 

1. Difficulty with everyday tasks. Everyone makes mistakes, but people with dementia may find it increasingly difficult to do things like keep track of monthly bills or follow a recipe while cooking, the Alzheimer’s Association says. They may also find it hard to concentrate on tasks, take much longer to do them or have trouble finishing them.

2. Repetition. Asking a question over and over or telling the same story about a recent event multiple times are common indicators of mild or moderate Alzheimer’s, according to the Cleveland Clinic.

3. Communication problems. Observe if a loved one has trouble joining in conversations or following along with them, stops abruptly in the middle of a thought, or struggles to think of words or the name of objects.

4. Getting lost. People with dementia may have difficulty with visual and spatial abilities. That can manifest itself in problems like getting lost while driving, according to the Mayo Clinic.

5. Personality changes. A loved one who begins acting unusually anxious, confused, fearful or suspicious, or who becomes upset easily and seems depressed, is cause for concern.

6. Confusion about time and place. If someone forgets where they are or can’t remember how they got there, that’s a red flag. Another worrisome sign is disorientation about time — for example, routinely forgetting what day of the week it is, says Jason Karlawish, M.D., a neurologist and professor of medicine at the University of Pennsylvania Perelman School of Medicine and codirector of the Penn Memory Center.

7. Misplacing things. Someone with dementia may put things in unusual places and may have difficulty retracing their steps to find misplaced items, the Alzheimer’s Association notes. 

8. Troubling behavior. If your family member seems to have increasingly poor judgment when handling money or neglects grooming and cleanliness, pay attention.

9. Loss of interest, or apathy. Not feeling especially social from time to time is one thing, but a sudden and routine loss of interest in family, friends, work and social events is a warning sign of dementia. A 2023 study published in the Journal of Alzheimer’s Disease found that apathy may even be a sign that someone is progressing from mild cognitive impairment (MCI) — symptoms of memory loss or thinking problems that are not as severe as dementia — to Alzheimer’s disease. People with MCI are at an increased risk of developing dementia.

10. Forgetting old memories. Memory loss that becomes more persistent is often one of the first signs of dementia.

–Credit: AARP