Can you explain the progression of the disease? Is it curable?

You are the nurse doing home visits in a retirement community. Your patient is an 85-year-old man who has been diagnosed with AD. His adult children are with him for the visit. They want to know about the disease and what treatment options exist. They ask the following questions:
1. Can you explain the progression of the disease? Is it curable?

2. Will the drug Aricept (donepezil) work to cure his disease?

3. What kind of side effects can we expect Dad to have with the drug?