My mums had dementia for about 7 years now. Hers was brought on by alcohol abuse. But we all started noticing signs a few months leading up to when we finally approached her with what we thought was going on with her. Had a really long and stressful process getting her diagnosed thanks to a very unhelpful consultant. It was only through convincing doctors to get someone to view her on a day to day basis and not giving her memory tests (which she’d mostly fail at, but they didn’t think anything of it) that we got her diagnosed.
My dads memory is just as bad. But not through dementia but having a massive stroke four years ago. It’s hard work dealing with two parents who don’t have a clue half the time.
Happy to answer any questions if you want to send me a message.