Add transition problems to the list of Pervasive Developmental Disorder (PDD) indicators. So did the meltdowns over sensory issues go down?
Pervasive Developmental Disorder (PDD) vs NT thinking... probably at least one college course. It's multi-dimensional and affects every thought. You'll have to read some books about autism. Try Temple Grandin. Start with articles on the internet. Obviously articles will focus on only one aspect of the differences.
Would be helpful if you could narrow down some of the issues. Then when he's going into a meltdown you can mentally run through the list to see if it's really one of those underlying issues. Addressing the issue with him rather than the topic of the issue can help once they're old enough to understand what you're saying. In other words, my Pervasive Developmental Disorder (PDD) kid last night was playing video games for awhile. One of his older bros came along and wanted to play with him. But the older bro wanted a different video game. Pervasive Developmental Disorder (PDD) kid has a meltdown. So what's the underlying issue? Partially the obsession has been disrupted so he goes into meltdown about that. But there's also the transition problem, he was abruptly removed from the obsession. So I have to go through a discussion about sharing, turn taking, getting a chance later, obsessions, benefits of trying other activities, abrupt disruptions vs notice, etc. Mine isn't mature enough to understand much more than that.
There's also black and white thinking in Pervasive Developmental Disorder (PDD). Mine is obsessed with rules. Any deviation from rules could cause a meltdown, whether by him or someone else. He's improved tremendously in this area but occasionally... To some extent he still has the idea that people are either good or bad, nothing in between, no movement once they have a label. So if he does something "bad" he often has a meltdown. It's not that he minds the consequence, it's that he now has the bad label. So I have to tell him the consequence after I reassure him that he's not bad, what he did was to violate a rule.
Re social skills the rule thing is a problem. There are rules at home and rules at school which can be different eg no touching peers. Took awhile when he was young for that to sink in. I had to write down the home rules, even the obvious ones. Last yr he urinated on the playground during recess. If he does that at home he's verbally reminded not to do it. But his bros couldn't care less, they occasionally do it too. On the playground it generated a firestorm of both adult and peer rebuke, laughter, etc. So to an extent, the social skills lessons are giving him the rules of social interaction. Just like the urinating in public, these "rules" are not obvious to him.
In the last couple of yrs he's been obsessed that fire is bad. To the point that if something is burning on my electric stove (he'd really lose it if I had gas) he's hysterical that it's a fire. Candles are a horror to light in my house. He has to stare at them every moment they're lit even if it's because the electric is out. All the time he's looking at them he's talking about putting them out. So fire is bad, can't ever be acceptable. Is it fear? Maybe there's a component of that but in my humble opinion it's mostly the black and white thinking.
There's so many aspects, you really have to study it.
What was his score on the online Pervasive Developmental Disorder (PDD) assessment? Was the Pervasive Developmental Disorder (PDD) diagnosis eliminated by a Pervasive Developmental Disorder (PDD) specialist? Sorry I don't remember.