Why are you insulting donkeys?
As for the ADD/ADHD thing, many boys and some girls are diagnosed this way because of straight up laziness on the part of teachers and caregivers. What many do not realize is that Depression, either situational or imbalance brought on by chemical exposure, or other things, or because of some hereditary thing, or something during gestation, often mimics ADHD, especially in boys. When young boys are depressed, for whatever reason, it frightens them. Sometimesthe reactions can be really severe.
What do boys do when scared? They run, jump, yell, fight, and generally act out. Situational issues can be dealt with by changing things, and other issues, when there is an actual chemical imbalance, can be treated with mood stabilizers. The current wisdom on this is that low dose maintenance can help a child re-train a brain to be "happier" ---that is not depressed. It works for many. What matters here is access to good care, and well trained medical personnel. If someone has a habit of being happy, over time it becomes hard wired in the brain.
As for Savage..... His real name is Michael Weiner. He certainly is one!