“I wonder if he’s in the early stages of Alzheimer’s? A typical symptom is irrational fits of anger.”
At 71, it would not be that unusual.
Unfortunately not. I just learned last summer that a former boss of mine has it and his wife is taking care of him. He is a couple of years older than me which makes him about 62. Apparently he has had it for a while now. That really shocked me but it can strike people in their forties even so it’s not a big anomaly.