I have said ADD/ADHD was caused by the medicine. My stepdaughter "had" ADHD until I introduced her to tough love. She kept acting up while attending a high dollar private school, latest designer clothing and shoes, she came home one day after a episode and found her door missing, no carpet, no bed or dresser, no in fashion clothing, no VS or Pink. She had rustler jeans, knockoff Chuck Taylor's and white t-shirts and value priced Walmart under garments. I took her out of private school and put her in public school. She rebelled and got herself some old fashion leather belt attitude adjustment, took her about 6 weeks of shame to figure out she was the problem. Counselor wanted to put her immediately in a 504 program, I told the counselor she doesn't have a problem with understanding, she has an attitude problem. Once she figured out she had to earn her privileges, she turned her life around and applied herself.
Amazing what a little accountability does for a youth.