Just adding in our diagnosis trail, so far.
Almost 3 years ago, when DS1 was diagnosed with autism with associated hyperactivity and attentional difficulties, we were told those things may spontaneously resolve, or if it's ADHD, they'd persist or become worse.
Well, they did seem to resolve for a while, then, a year ago, they started to get worse, as did his oppositional behaviour.
In October, last year, I spoke to his paediatrician's registrar at the time and got a referral to CAMHS, since he was having problems both at school and at home.
Finally, in February, we had a lengthy meeting with a mental health worker, who gave a thorough interview and administered a conner's scale questionnaire.
School got their version of the questionnaire, too.
DS2 was then invited back on a separate day at a different time of day for a play observation.
After some delay, he was observed at school - by a different person who hadn't spoken to us, so was seeing him fresh. The day before that, after being contacted by our paediatrician who was concerned about DS1, we had another brief meeting with the mental health worker. He told us that the professional consensus is that it looks like ADHD, but it's oppositional behaviour that's causing the bulk of problems at school.
He has now been referred on to the Psychiatrist, who will discuss what they've found out and may want to make his own observations.
And this is by an underfunded, overstretched CAMHS team without a good reputation. Nothing short of thorough.