My great uncle, who is more or less a grandfather figure to me has started to have delusions as well as, not being able to remember where he is while driving the streets. He has drove 70 years of his life and he will be 90 in February. The other day he didn't know how to get home and should not be still driving at all. He would never ever agree to go to a home or have a caregiver come into the house. He has convinced himself that his house is full of bugs and has paid numerous exterminators large sums of money to spray these bugs that do not exist, but the poor soul is convinced they are there. He falls asleep while cooking and almost burnt the house down. I do not know the steps to take or what to do. He has no children and no spouse. It is just him, his sister who is also in her 80's, me and my mother who is also not in good health. I just feel so lost and not sure what to do.