@ehBeth,
Quote:..why he sounded so different when travelling in Asia.
There were folks there making sure he took his daily dosages of anti-dementia meds. For whatever reason (likely his truculent and obfuscating being), he seems to go out without his meds - sometimes it would appear, for several days..
My usually now missing somewheres friend Jimmy, shows similar patterns and is not good about taking meds. Usually is found wandering miles from home and gets hospitalized for a brief time. That gets him back on track, then he's discharged and the cycle renews, getting progressively worse since 2014. (warning signs were there before that)