This question can't be adequately answered without quoting from an authoritative source. This is from the DSM-IV-TR and is therefore a definition based on observable symptomology, not physiology:
Dementia of the Alzheimer's Type is the development of multiple cognitive deficits manifested by both-
DSM-IV-TR, copyright 2000 American Psychiatric Association, Arlington, VA. I am including this contribution under the assumption that one brief answer to one question constitutes fair use.
a progressive disease that causes the brain to deteriorate in a continuous process
There is no cure for Alzheimers
You can find information on alzheimers disease from your local library, the internet and various support groups. It is best to start with the hospital they will have a wealth of information.
People with Alzheimer's disease may exhibit symptoms such as memory loss, confusion, disorientation, mood changes, difficulty with language, and impaired judgment. They may also experience changes in behavior, such as agitation, aggression, wandering, and withdrawal from social interactions. It is important to seek medical advice for proper diagnosis and management of these symptoms.
No, probably not.
There is no cure for this disease.
What happens when you don't treat Alzheimers disease
Alzheimer's association is the best and a dedicated website which gives correct information on Alzheimer's disese. Their website address is http://www.alz.org/alzheimers_disease_what_is_alzheimers.asp There are several good sources for information on Alzheimers disease all over the internet. I would start with www.webmd.com,it has a great deal of information.
You can check out the Alzheimers Association for information or talk with your Grandmothers doctor. Alzheimers Association would have a check list of questions that you can use to talk with her doctor.
a progressive disease that causes the brain to deteriorate in a continuous process
Ronald Regan died of Alzheimers disease
Alzheimers Disease
Actually, it's alzheimers. That might help!