What's the difference between schizophrenia and Alzheimer's?

7 answers | Last updated: Nov 27, 2011
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Chad asked...
What's the difference between schizophrenia and Alzheimer's? I'm seeing some of the same symptoms, and am getting very scared.
 

Caring.com User - Ken Robbins, M.D.
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Kenneth Robbins, M.D., is a senior medical editor of Caring.com. He is board certified in psychiatry and internal medicine, has a master's in public...
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Schizophrenia and Alzheimer’s Disease are both diseases of the brain that can cause dramatic symptoms. They are different in many ways, but there are some similarities. Both can be associated See also:
Non-Alzheimer's Causes of Dementia

See all 640 questions about Alzheimer's and Other Dementias
with psychotic symptoms. That is, they can include hallucinations or delusions. Hallucinations are false sensory perceptions, which can involve someone believing they are seeing things, hearing things, touching things, or smelling things, but these perceptions are not real. Delusions are fixed false beliefs, such as someone believing they are being followed, believing they are not human or believing they have a terminal illness, though there is nothing to support the accuracy of the beliefs. Furthermore, both diseases can interfere with thinking, as will be discussed below. Their differences, however, are far greater than their shared features.

Alzheimer’s Disease is the most common cause of dementia. It is the cause of about two thirds of dementia in this country. This is a disease that only rarely manifest itself before age 65. By the time people reach age 85, about 40% of people in this country can be diagnosed with this disease. Alzheimer’s Disease destroys brain cells and as a result, it causes progressive problems with memory and other cognitive functions. For example, it can cause problems with spatial orientation, reasoning, abstract thinking, language and planning. As it gets worse, it causes problems with social functioning, hobbies, work and even with performing activities of daily living. There are many psychological difficulties that are experienced by people with this disease. Depression is very common, especially early in the course of Alzheimer’s Disease. People can also become anxious, agitated, aggressive and psychotic as the illness progresses. These associated psychiatric difficulties can be treated, but unfortunately we do not know how the treat the pathologic process that causes this disease. There is a class of medications called cognitive enhancers that can slow the disease process, but only by months rather than years.

Schizophrenia is a psychotic illness that generally becomes manifest between the late teens and the early 30’s. The symptoms of schizophrenia include hallucinations and delusions, as well as difficulty organizing thoughts. Symptoms can also include a decrease in the ability to show or express emotion and problems with particular cognitive functions. These functions can include problems with attention, planning and organizing thoughts, and can include problems being able to use recently learned information. This loss of accessing recent memories is a relatively small part of the illness, whereas with Alzheimer's Disease, memory problems are fundamental to the illness. Fortunately, with schizophrenia we have medications that can treat the illness and markedly reduce the symptoms.

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mad127d@aol.com said...

I have no degree but behaviorally at least they seem to have alot in common, don't they. God this is so hard today. God Bless us all.

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An anonymous caregiver said...

The answer given by the physician was not good enough.

Differences

All I can see so far is the short term memory is different is better for the Alzheimer patient. Short term memory is a problem with schizophrenia. What else is different?

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Rhondabonda said...

My mother has Alzheimer's and lives with us (we're on year seven). I am responsible for her care. Our son was just hospitalized with what they think is Schizophrenia. My husband and I see some similarities in the way both my mother and son reason. There seems to be some similarity in the fact that they both have difficulty not only with reasoning, but everyday tasks. I know that in Alzheimer's the brain has plaque growth, but does this occur with Schizophrenia? My son is not the same as he was several years ago. He began having difficulty with normal adult life (jobs, taking care of his room, self, etc.) right after he graduated from college. He has been seeing an orthomolecular physician who has prescribed mega doses of vitamins and he also is supposed to use a CPAP machine for breathing at night. If he misses his medication or vitamins or the breathing machine, there is a noticable difference in his capabilities. He is employed and supports himself, which is a huge step in the right direction as he stumbled through life for five years before we realized exactly what was wrong. If anyone else has any insight as to how to help him (or my mother), I'd love to hear it. Thanks! Rhondabonda

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Emily M. said...

Hi Rhondabonda,

Thanks for your question. Sorry to hear about your son's and mother's diagnosis. That's a tough situation! To answer your first question, there are no plaque growths in schizophrenia. Schizophrenia is thought to be caused primarily by a dopamin imbalance in the brain.

We have a few articles about schizophrenia that you may find helpful here: http://www.caring.com/schizophrenia

I hope that helps!

-Emily

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An anonymous caregiver said...

mY HUSBAND HAS BEEN DIAGNOSED WITH MODERATE TO SEVER DEMETIA...hE IS N AN INSISTED LIVING HOME NOT FAR FROM ME. hOW DO i KEEP HIM FROM ALWAYS WANTIN TO COME HOME WHERE THE DOCTORS SAY HE IS NOT SAFE

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Emily M. said...

Hi anonymous, thank you for your question. If you'd like, you can post new a question in our Ask & Answer section, here ( http://www.caring.com/ask ). I hope that helps! Take care, Emily | Community Manager

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