Hi everyone. Hope everyone is well. So my grandad is 85, and not been diagnosed with anything... He forgets things but isnt too bad....but lately he keeps saying at night time a mist comes into his house and follows him round, and now has added at night if he looks in the mirror the tv doesn't match what's actually on the tv and he sees people or kids waving at him..... And other things. Now i looked.up and its says people with Alzheimer's can hallucinate!? Should i be concerned? thank you!