I was diagnosed ADHD fairly recently (two years ago in my late 30s). I find that much of the conflict in my own marriage arised from my wife's suspicion that my behavior is poor character rather than physiological. This is of course partly true in this sense: my character developed the way it developed because I had ADHD and was not diagnosed until my character had been formed and reinforced for years. I was ADHD when we married. There was no bait and switch because I have always had difficulties with organization and planning and executing tasks. I am from any "normal" standard quite accomplished despite this fact, although I am not too much help around the house. I add to chaos even when I am trying to fight it. My wife, who is skeptical about 1) the existence of ADHD; 2) my own diagnosis; and 3) my own sincerity in my efforts to improve, thinks that having been diagnosed and prescribed medications I should now have all the good qualities she liked about me and none of the qualities she does not like. Would that this were true -- maybe -- but it is not true.
I am beginning to suspect that just as people who marry alchoholics frequently have their own dysfunctions, so too do people who chose to marry someone with the behaviors associated with ADHD. My wife used to find my befuddled character charming and to like my spontaneous wit and creativity. Now she has to live with the attending down-side. She seems to be more conscious of my failings than her own -- indeed, my failings are somewhat convenient in that they make her own failings and failures seem less bad to her own self-image.
I am curious to hear other people's experience. I wonder if "comorbid" dysfunction is common and whether it has certain characteristics.