First of all, I am not a mental health professional, so I might be wrong here. My understanding is that ADHD manifests itself with a collection of symptoms and degrees. You get diagnosed when you reach a certain threshold of all the possible ones.

The inattentive aspect, which is the one I predominantly have, seems to have "missing social cues" on its list of symptoms.

There's also the indirect problem of children avoiding ADHD children and them getting less social practice as a result.

This might be relevant https://www.foothillsacademy.org/community/articles/adhd-soc...