I am putting this Q? here as/because I fear/know that OH, although diagnosed with Parkinson's, is now going the dementia route. As I mentioned a while back the heating, he thought that there was something wrong with it. We got it checked and new thermostat fitted. Now I can't remember if I read something on here, or whether it was on the internet, but dry eyes are a symptom of dementia, is this correct. Not expecting too much response but it is niggling my brain.