@Richard_Littler usually the study refers to people on certain ADHD meds although it’s not clear to me that age, gender and young onset information is neatly delineated. That said I’m 8-10 years into physical PD symptoms, and only recently diagnosed with ADHD, after pursuing that loosely for a few years. Symptoms were there since I was young. A huge relief to me, the diagnosis. It has pros and cons.