Yeah no. There are four types of ADHD. Level 4 are struggling, with raging impulsivity and energy, violent, expressive - often in prison. Type is what was known as ADD in the past.
That was supposed to say type 1. Typed on my cellphone.
The combined is the third yes, and the fourth is an aggressive-rage-like version. You know the type, instead of becoming rugby pros, they end up in violent crime.
Let me get back to you on a source, ICD10 somewhere.