Does this sound like ADHD?

[brwneyedlady8]

My husband has been diagnosed with dementia but I think he should be treated for ADHD.  He talks continuously and talks to himself all the time.  He has no comprehension and asks the same questions over and over, most of which he knows the answers to already.  He interrupts people's conversation and blurts out anything he has on his mind not knowing right from wrong.  I want doctors to try ADHD medicine but they tell me he woulda gotten it as a child, not as an adult.  His whole life is centered around his family and what they're doing.  I am at my wits end with him. Does anyone else suffer from these symptoms and if so, what was your diagnosis?

[Sandman2]

     Sorry I didn't answer sooner, I just noticed this post.
   Well, the doctors are very wrong about saying he would have gotten it as a child.  "MYTH: Unless you have been diagnosed with ADD/ADHD as a child, you can’t have it as an adult.
   FACT: Many adults struggle all their lives with unrecognized ADD/ADHD impairments. They haven’t received help because they assumed that their chronic difficulties, like depression or anxiety, were caused by other impairments that did not respond to usual treatment."
        From - http://helpguide.org/articles/add-adhd/adult-adhd-attention-deficit-disorder.htm  
     This link is worth reading.

    You also might want to read this link on 8 Reasons Adult ADD Is So Often Misdiagnosed - http://www.additudemag.com/slideshow/139/slide-1.html?utm_source=eletter&utm_medium=email&utm_campaign=December
     You also might want to read or check the reviews on this book, "Is It You, Me or Adult ADHD"?  http://www.amazon.com/Stopping-Coaster-Someone-Attention-Disorder/dp/0981548709
      It is hard to tell if he has ADHD from your description.   The lack of compression is troubling.  It is very possible to have both dementia and ADHD.  Has he ever shown signs of depression or frustration before this problem with compression?