Gardnr, To clarify - the neurologist's diagnosis is "Dementia, probably Alzheimer's." I tried to get him into a drug study right after the DX, but the PET scan he had to have to see if he was eligible showed he had too much tau plaque. That tells me it's Alzheimer's. When I say stage 4 - I'm referring to stage 4 of the 7 stages of Alzheimer's developed by a Dr. Reisberg. Stage 4 is Moderate Decline. He is taking memantine (Namenda) and donepezil (Aricept).
https://www.alzheimers.net/stages-of...imers-disease/