Can ADHD cause someone to not know they said something?

My husband today mumbled, "Of course" as he was leaving the room in response to something my daughter said. I told him it was extremely rude and mean to respond that way. He was adamant that he didn't say anything at all. I was dumbfounded. I know what I heard.

He's done this in the past, also mixing up words - saying "left" when he meant "right" and actually saying he HEARD "right" come out of his mouth. If I hadn't had witnesses in some instances, I'd think I was going crazy?

Has anyone else experienced this? I am very concerned he has some serious condition.


- Dawn M