My ADHD is adult on-set ADHD caused by PTSD (I was jumped by 5 guys from my dorm in broad daylight at Texas A&M in 1995/96) Both the PTSD and ADHD went undiagnosed until 2003. By that point I was self-medicating with meth....had been since 1998. That's the one part of your story that I had problems with...if Brett is ADHD, he would need a stimulant to control that, weed wouldn't help with that aspect I can totally understand you not wanting to go to the hard drug topic and sticking to weed since most people wouldn't take issue with that, but I know from experience that weed might calm his body down, but his mind would still be ADHD,