I believe a trial course of Ativan or similar benzodiazepine may very well be worth a trial, if your trying to avoid over sedation. My wife same dx and staging a year ago was experiencing all the same sequelea. Seroquel, even minimum dosing plus trying to titrate it with dosing @ 18 hrs, then trying alternate day dosing left her totally sedated.
A switch to Ativan, 1mg with 3mg of Melatonin when Sun-downing, ranting, pacing and non stop rummaging, etc became an issue has made the situation totally manageable. Over these past years of care giving, first for my mother in law with AD, and now with my wife. I've learned that there are no hard and fast rules as to what medications will work. The disease is not really diagnosed 100% surety until autopsy. I think the most we can hope for is that our Neuro's or PCP's are willing to experiment to find the best pharmaceutical available, one that will minimize our LO's symptoms without overpowering unwanted side effects
Staging and classifications of types of Dementia are vague and imprecise at best, can only determined by the skill of interpreter of he scans and other test and what the MD sees that particular point in time while test the patient. My wife on two different days 24 hrs apart, same site, same person admin. the test had MME scores of 15 and 27. That was the end of testing for us. Our MD's now only worry about treating her symptoms her staging is meaningless just deal with the symptoms is our approach
I possess a Pharm D.