There is substantial comorbidity with ASD and ADHD. ADHD occurs in ~4.4% of the general population, but with ASD that goes up to ~45% (the margin of error is massive on the latter)
Some of the symptoms of ADHD, like RSD (rejection sensitive dysphoria), sound very much like ASD traits rather than ADHD traits.
In the future I think we'll find a lot more underlying commonalities of all of these conditions. OCD, GID (gender identity disorder), misophonia, tourettes and more are also strikingly comorbid within ASD.
Some of the symptoms of ADHD, like RSD (rejection sensitive dysphoria), sound very much like ASD traits rather than ADHD traits.
In the future I think we'll find a lot more underlying commonalities of all of these conditions. OCD, GID (gender identity disorder), misophonia, tourettes and more are also strikingly comorbid within ASD.