It's a long shot, because my research has turned up nothing, but has anyone else heard of dementia being linked to hormonal changes? My mother (81, mild dementia) has been going through hot flashes, night sweats and rapid body temperature changes for the past six months. Doctors have no idea... no evidence that it's related to her medication (Exelon patch)... no lifestyle changes to explain it. Certainly not life-threatening, just unusual and, for her, confusing.
I hope the gp turns up something. Subjective feelings of hot and cold are one thing, but night sweats always worry me. My husband had them recently and it was one of the clues that led to a dx of atypical pneumonia, which hadn't shown up on an xray.
Good luck! And do let us know what happens...we learn from each other!
(Both men had Lewy Body Dementia. Do you know what kind of dementia your mom has?)
Obviously I don't know if it is the dementia that is causing your mom's "hot flashes" but I sure know that dementia can cause issues with body temperature. Do any of the doctors she sees specialize in dementia?
Or maybe it is acid reflux, heartburn, that can mimic hot flashes. I get that myself the first thing when I wake up in the morning.