Comment by swsieber

IIUC, there are two main components to ADHD, and you can have one, the other or both. And all qualify as ADHD.

I'm likely ADHD, and the majority of my siblings have it. There's a night and day difference though between me, who in a questionnaire scored high on both, and me who scored high only in one[1].

[1] Well, borderline in one and not the other. Immediately after taking the questionnaire I attended a work meeting and realized that there were at least a half dozen questions that I answered optimistically through rose-tinted glasses.

With all that said, I'm working to address my sleep apnea before getting a diagnosis because I've heard that sleep deprivation can manifest similar to ADHD.