What a great post. Thank you. I'm looking forward to perhaps a follow-up from @Craigo
This seems possibly valid to me. I'm just wondering how you reached the conclusion, and why "undiagnosed." In Rozen's big 2011 study of people with CH, he asked about other medical conditions that people with CH have, but it doesn't seem that ADHD was among the possible answers. Someone at ClusterBusters might know whether another big study is planned (there was another one, after Rozen's, by Larry Schor), since CB is a source for research subjects. It seems like this is a question that might be asked (at least about diagnosed ADHD).
Also, regarding dopamine, I admit to not having studied the two reports I posted in the research/scientific news section below, but I guess I could imagine that increased dopamine production accounts in part for the effect of D3 on mood.