[torben-friis]

>and I wasn't diagnosed with ADHD because I lack hyper motion activity.

That sounds a bit weird, ADHD is known to have hyperactive and inattentive variants; and the lack of a single symptom does not lead to a negative diagnosis.

[a5c11]

I've scored pretty high on the "inattentive scale", but got only a few points on the "hyperactive" one. I was told that both scales must be high to be diagnosed with ADHD.

[taegee]

That doesn't sound right. The hyperactivity can express itself in many ways, as you say – not necessarily physically. Is your practitioner maybe really old? They changed the definition in 1987.

According to DSM‑5‑TR and ICD-11, ADHD is subdivided into three presentations: predominantly inattentive, predominantly hyperactive-impulsive, and combined.

[torben-friis]

>I was told that both scales must be high to be diagnosed with ADHD.

My understanding is that this is not the case, that ADD (without the hyperactive part) used to be considered a separate diagnosis but this is no longer the case, and one of the scales qualifies.

I am not a proffessional though, so take it with a grain of salt, but it might be worth double checking just in case.