I've always wondered if there might be a link between Dad's early onset dementia and the way he was before he got it, I know we all struggle with wondering why they got this disease and I'm probably grasping at straws, especially as there are so many different types of dementia but did anyone else's early onset dementia sufferer display these kinds of behaviours: 1. Dad was almost obsessive compulsive about things, had to stick to the same routines, got unreasonably angry if you disrupted his routine; 2. Dad was extremely smart, extremely high IQ (this is partly why I think this is the worst fate to have befallen him), never was able to put a brainteaser to him that he couldn't answer in seconds; 3. Dad was a mainframe computer programmer originally,he later worked as a sugar chemist and then was company manager; 4. Dad would get extremely angry if he drank, he was never a happy drunk, he might start off happy but then you knew there would be hell to pay later; 5. Dad was a quiet very private man, with few friends, but greatly respected by many, i.e. he didn't let people in; 6. Dad was a workaholic; 7. Dad would never want to do any fun stuff, but when you managed to drag him to it he would enjoy it; 8. Dad grew up in a very poor family in Northern Ireland, 6 of his eight brothers and sisters died from cancer before the age of 60; 9. Two of Dad's siblings were alcoholics, one was a gambler,i.e. addictive personalities; I know that there is little chance that these issues are related to/the cause of/or predecessors of his dementia but I do wish researchers would collect data on dementia sufferers so that patterns could be recognised if there are some. I am pretty certain that it appears that many personality types make up the later onset dementia sufferers but don't know about early onset dementia sufferers. Thus this post in this section. I appreciate any feedback.