Brianna, I believe I have mentioned to you before, that your sister needs to
get him on the right medication to limit his agitation, which manifests by
his nagging her like that.

Bri, as Evelyn says, this behavior is "agitation" behavior. He needs
some anti-anxiety meds. A lot of people with AD get into this. They
can  fuss continually about a specific thing they get fixated on, or
fuss in general - its just restlessness.

He absolutely can't control this, nor is he doing it on purpose. He
has no insight into his own behavior, much less the impact it has on
those around him. Its really pointless to be annoyed with him, given
that annoyance implies he is doing something he could stop if he
wanted to. He needs some meds to bring his anxiety and agitation down
a notch or two, and then he won't be up pacing around and worrying at
her.

She should see a lawyer about their financial situation and the
medicare/medicaid rules where they live and do some planning. The
thing is, for sure he will get worse and worse, so if she's at the end
of her rope now, it won't improve with time. She needs an informed
plan, because she may have to place him eventually just to survive.

M.