I wonder what you spotted first as the sign of parent's dementia. My DM is 85 lives independently and manages ok. I visited her this summer (she lives abroad) and I noticed although she is still tidy, she doesn't clean (hoover dust) anymore so I did that for her but she had a freak out and a melt down about it. She would clean her windows eventhough she has a person to do it (just the windows), she doesnt want a cleaner. I visit her once a year because a) we have a specific relationship b) I can not afford to fly more often. I talk to her on the phone every 2/3 days. Last 3 years significantly changed and it is same old with an elderly so I do not really have a Mum to talk about life or ask for help. She was alwasy a difficult mother so I moved out at 21. For those last 3 years I started observing occassional slips in memory, or using wrong words to describe something, can not pronounce words that are not difficult. The strangest thing was 3 years we got a new washing machine and she was not able to memories a 3 steps simple sequence. It was horrendous to watch, she was agressive, defensive etc and just could not either understand it (so it makes sense and you remember it) or memorise it. The words twisting became a continuous thing but today i got astounded by the fact she could not remember my surname. I told her to go by the letters of alphabet in order but she did not want to do that, then I suggested maybe she should check it as this is one of the first major sign of dementia and she went off with 'oh yes I was waiting for you to say it of course yes I have it and I need to be locked away' - she just does not want to admit anything, she has always been very vain and starts to become a bit deluded. Last year I noticed a substantial amount of money in cash she withdrew from her account but never told me what for. Denied it. I wonder should I start worrying? What other signs I should look out for?