Twink, Bruce posted this explanation of how AD affects the sufferer, which I thought was SO good:-
Brucie said:
I've thought about this a lot.
My theory:
basically the brain controls everything we do, everything we think, and most things we feel.
We see the world, in effect through the camera of our brain [camera = eyes + interpreting mechanism];
we sense the world through our brain [ears, nose, taste buds + interpreting mechanism];
we feel the world through our brain [sense of touch + interpreting mechanism];
we remember the world [brain's memory + brain's retrieval mechanism];
etc.
If any of the interpreting or retrieval mechanisms gets damaged, then the brain still tries to figure out what's what. It still thinks things are okay, because it only interprets what is coming in, not what is not coming in, not what is coming in incorrectly.
I've seen supercomputers go into compute loops because of similar things.
Far as the computer is concerned - or the person - it is business as usual.
That's why, if you tell the person there is something wrong wth them, they won't recognise it. Their normailty is intact because they don't know what has gone missing.
It's so difficult to tell the difference, in an adult person, between "can't" & "shan't", simply because the evidence of your eyes for the past 10 years (or 20, 30) tells you that
of course they are physically capable of doing this or that, so why, suddenly, can they not now? If they were a small child, it would be easier to give them the benefit of the doubt, wouldn't it. Sadly, many aspects of AD seem to slowly turn capable, intelligent adults back into toddlers who can't understand or remember the things we try to say to them, and it's a very unnatural state of affairs to try & get to grips with.
I thought Bruce's analogy with a faulty computer made the point very well.
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A second good idea I read on here was for the AD-sufferer (or his companion/carer) to carry a pre-printed card, explaining that
"he suffers from Alzheimer's Disease, which sometimes affects his behaviour.
Because if this illness, he may sometimes not reply when spoken to, or he may have difficulty expressing himself (or writing, or signing his name, or whatever).
Please speak to him normally, and don't be surprised if someone else answers for him."
(Obviously, details of Steve problems as appropriate, and in whatever terms you would find acceptable.)
This could be handed to a shop assistant/dental nurse/bus conductor (for example) to avoid loud or embarrassing explanations
Such a card would have different details for Steve than (for instance) one which my Mum would use, since their symptoms would be very different. Likewise one which you prepared today would probably not fit the bill in a year's time, due to changes in his condition, or perhaps (hopefully) even improvements in his symptoms brought about by some medication.
Best Wishes