I always come into these threads with this.. BUT I am living it & it was missed with my kids & I can tell you now, those behaviours in a ten year old are not fun for anyone involved, least of all the ten yr old.
I would suggest that you start writing a list of his behaviours so you can tell your GP with out getting the "its normal for his age" line. No its not.
Video him if you can. Visual footage of the behaviours that concern you most will help with assessments.
My home life is Autism spectrum condition. I have 5 kids, 3 of which have a ASC. My Husband also has an ASC. Please follow your gut. Your psych is right on the ADHD thing, it needs to be in more then one situation with ADHD. However, for years I was looked at like I was crazy when I would describe very similar behaviours about my now ten yr old & the school, day care etc all said he was lovely. But really the poor kid was putting so much into keeping it together in those situations that once he got home he just exploded. He was finally diagnosed with Aspergers & Sensory Processing Disorder in 2011 when he was 9.
Lists, video & do some research. I could be way off the mark but have a read of the "My Aspergers Child" blog. It has lots of useful information that will help you decide if its a path worth investigating.
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