My sister and I are having a debate. As Dad's primary caregiver I saw incidences of sundowning on a regular basis. (He passed a yr ago) When she covered for me for 10 days to give me a break, he apparently had no episodes. This gave her inspiration to question his dementia diagnosis and to suggest that "maybe it's your attitude that has Dad acting the way he does with you". (at which point I wanted to strangle her!! lol..)
He was also a perfect angel with her the entire time. Never was abusive with her, never yelled at her, never gave her any trouble. (at which point I wanted to strangle him, lol!)
Is this normal? Can their behaviors adjust like this? I think I have heard that there is something called showboating, where they act on best behavior with non-primary caregivers. Is this a real thing?
If anyone has links verifying the reality of inconsistencies in sundowning, or the reality of showboating please share. I've searched and haven't come up with anything.