I'm sole caregiver to 82 yo mom who was diagnosed with moderate vascular dementia about 2 years ago. She was progressively getting worse until about 6 months ago and it seems like a fog has lifted and she is 80% improved. While some aspects of this are wonderful, mom seems to have a personality disorder now. She is always angry and hateful in the morning and her mood seems to be completely flipped by diner time when she is pleasant and cooperative. I am so tired of this emotional roller coaster ride. It is exhausting. How do I know what is intentional and what is illness?