ADHD based on junk science that reclassifies childhood behaviour

On the surface, this would appear to be a sensible decision, based on the understanding that a consultant is more experienced and more knowledgeable in the diagnosis. However, when you are fully informed about ADHD and how the diagnosis came into existence, you come to realise it’s a quite bizarre situation.
It doesn’t matter whether it’s a GP, a consultant psychiatrist, or a paediatrician seeing the child suspected of having so-called ADHD, because there are no physical tests that can be carried out to support its existence. Children are labelled with ADHD if they fit the diagnostic criteria listed in psychiatric textbooks, but, if you took the time to read the criteria, you would see that it is reflective of normal childhood behaviour.