I have read loads of info on this site regards dementia and behaviours. I know there is no hard and definite rate of decline as all are individual. I will explain some of my Dads to get some advice. It started around 3 years ago maybe longer. That's when I noticed strange behaviour. Always said he was ill and wanted doctor but could never describe symptoms. Went round in circles. Sore back. Sore leg. Sore stomach. If I phoned when on vacation he was always very ill. Now in care. Hallucinations and everything is lies. Being aggressive to me. In denial of how he cannot get out of care. Now says he was in perfect health before care home and that's what has caused him to be ill. Rants about everything and does not like anybody. Does nothing. Just sits all day. Says food is poisoned and they all get injections with huge needles. Sees dead relatives. Is this a stage which will pass?