momwhocares,

I can tell you the mental issues from concussions are real. I struggled through my youth. The brain is going through tremendous changes until age 25. The lack of maturity to commit to medications sounds like the problem. I hate having to take meds and even my vitamin regimen but know that my life depends on them. I wish I had a suggestion to help you with your son. Maybe in time, he will learn the value of meds.

My best to you.