I am very cynical about the number of people/children who actually have conditions/disorders such as Aspergers, ADHD, ADD or anything else, because I have witnessed at close hand the behavioural problems of young relatives, and their parent's response. It is almost as if SOME parents want their children to be different/special, or maybe just need to find an excuse for their children's behaviour rather than admit that they are the problem, that their parenting skills are the cause of the problem.
Going back to the behaviour of relative's children, the parents are sometimes so immersed with their perceived "angel child", that they refuse to believe their child can do any wrong. This of course means that excuses have to be made for the little brat, or in a worst case scenario, another adult will be blamed for starting the child off.
In one case, which involves a family with four children, ALL of the children have been tested for a variety of behavioural problems, when in my opinion it is the lack of discipline/care/parenting skills exhibited by both parents which is to blame.