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Alzheimer's Disease and other Dementias

Is It a Memory Lapse or Is It Dementia?

About 10% of all people over the age of 65 have some form of dementia, by the age of 85 that has increased to 30-50%. As the population aged 65 and older continues to increase, the number of people with dementia will increase as well. But millions more elders who forget a name or why they walked into a room worry that every memory lapse might be an indicator of the onset of dementia.

We do typically become more forgetful as we age. And progressive problems with memory can be an early sign of Alzheimer’s disease or another form of dementia. It is wise for seniors and their families to be alert to warning signs. But there’s no need to be unnerved by every memory lapse. The warning signs of dementia typically include not just problems remembering but problems communicating and reasoning which become evident from a risk assessment by a professional.

Dementia is not a disease. It is a set of symptoms that might include varying degrees of memory loss, language difficulty, poor judgment, inability to concentrate, and impaired visual perception. Generally, dementia is said to be present if two or more of these symptoms are present and severe enough to impair performance of everyday activities. Alzheimer’s disease, the most common of the dementias, accounts for about 60% of cases and currently affects more than 5 million people in the United States. Vascular dementia, which is generally considered the second most common form, accounts for 20-30% of cases and may overlap with Alzheimer’s.

There is a wide range of conditions that mimic the symptoms of dementia, ranging from the side effects of medication to substance abuse to a buildup of fluid in the brain. It may take a series of examinations and tests to identify the underlying cause of symptoms. But the first step is for the patient or family members to recognize when professional help is needed.

Here are my tips for recognizing normal behavior vs. more troublesome signs:

  • Forgetting where you put your eyeglasses is normal. Putting things in unusual places, such as putting important papers in the laundry bin, is not.
  • Forgetting why you walked into a room may be normal. Confusion when performing familiar tasks, such as writing checks and paying bills, is not.
  • Forgetting the name of a friend or acquaintance is normal, especially if it is remembered later. Forgetting newly learned informationor appointments, may be an early warning sign of dementia.
  • Making an occasional bad decision is normal. Showing a new change in poor judgment in important matters like managing money and risk, is not.
  • Occasionally forgetting where you were going is normal. Getting lost in your own neighborhood or forgetting where you are or how you got there is not.
  • Occasionally having trouble finding the right word is normal. Having trouble putting thoughts together to communicate, or frequent naming trouble, is not.
  • Having a “down day” is normal. Dramatic mood swings, persistant apathy, or a significant change in personality are not.
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