I don't even know for 100% sure I have it but the last time I tried to talk to a professional they basically just wrote me off because my grades were good as a kid, I understand part of the diagnostic criteria is symptoms presenting themselves in childhood but to be honest I got by just fine without studying or paying very much attention.
Does anyone have experience with this
I think it's the other way around in the dsm: ADHD hyperactive and inattentive types
Of course the dsm is made up, so none of this classification has been proven to relate to etiology of adhd