Are All Dementias Alzheimer’s? by Michael G. Rayel, MD

I’m surprised when some patients and caregivers confuse dementia and Alzheimer’s as one and the same. Each time a family member is suffering from memory loss, the conclusion is always Alzheimer’s. Is it reasonable to label all dementias as Alzheimer’s?

As a clinician, my answer to queries is that Alzheimer’s dementia is only one type of dementia and that not all dementias are Alzheimer’s. Aside from Alzheimer’s disease, other dementias exist such as Dementia with lewy body, Vascular dementia, Parkinson’s disease with dementia, and dementias due to various neurologic and medical conditions.

How will you know if a person is suffering from Alzheimer’s dementia? What is Alzheimer’s dementia?

Alzheimer’s dementia is a neurologic disorder characterized by a progressive and irreversible cognitive decline associated with impairment in functioning. The cognitive deterioration consists of memory impairment. Initially there is recent memory impairment but as the disease progresses, even the long term memory is affected.

In addition to memory impairment, a patient with dementia has impairment in one of four cognitive areas: aphasia, apraxia, agnosia, and impairment in executive functioning. Aphasia is a problem in language characterized by inability to express oneself, repeat words or phrases, or understand what is being said. Apraxia is inability to adequately perform a usual motor activity such as combing the hair or brushing the teeth despite no paralysis or musculoskeletal abnormality.

Agnosia is inability to recognize objects or things despite intact sensory functions. For instance, a demented patient cannot recognize a key or a pen placed in his or her hands without looking at it.

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BIO:

Copyright©2004. All rights reserved. Dr. Michael G. Rayel – author (First Aid to Mental Illness–Finalist, Reader’s Preference Choice Award 2002), psychiatrist, and inventor of Oikos Game: A Personal Development and Emotional Skills Game. Please visit www.oikosgame.com for more information.

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