Not to be too contentious or too much of a contrarian, but I do think people are too quick to default to this kind of assumption. Just because a person has more nervous energy than normal and seems to rush through life doesn't necessarily indicate some kind of attention deficit at all.
While I realize everyone is their own kind of snowflake it doesn't mean everyone has to have a mental disorder or even a comorbid if there's a hint of one. It bewilders me how often people talk about having a comorbid or even a bunch of comorbids, because even though I'm certain there really are people with them (obviously having comorbids is a prominent thing amongst people on the autism spectrum and sensory processing disorder happens to be a comorbid that so many of us have it's considered synonymous with autism or even like a criteria), I tend to think it must be prohibitively rare for a person to genuinely have as many comorbids as some folks like to claim.
There's a lot more awareness than there was in the past about mental illness but people still have a long way to go so far as understanding the difference between "she's socially awkward, maybe she has Asperger's" and "oh, that's what it's like for someone who legitimately has it".