No, he didn't. Someone labelled him as such. In the February 2012 edition of Der Spiegel where they interviewed the guy (Leon Eisenberg) who discovered ADHD and who said that ADHD is a "fictitious disease". It's all bullshit to sell drugs, in this case ritalin which is essentially, methamphetamine. You want to give your children, your growing child, meth? Of course not. It's NATURAL for young males to be hyper and have lots of energy. Look at any other mammal.
Oh yeah, that interview, which was done a few months before the cocksuckers death, was done under the stipulation that it not be released until three years after his death. You'll come across all this once you look into it.