I agree with what others have noted, Debbie. Crying a lot might not seem the "norm" but I believe it is for people who have been Dx'd with Alz. or another type of dementia. Perhaps it stems also from frustration, knowing some things have changed (and dramatically) but not knowing why or having a life that is no longer within the person's control.
The person I care-give for is thought to have Frontotemporal Degeneration/Dementia, and should find out more later this month. What initially threw me was the crying at the drop of a pin, along with agitation, pacing, and fixating.