DS is 6. As DS has got older, I've begun to notice distinct differences between him and his peers. I also see a lot of similarities between DS and how I was a child.
90% of the time, he is being silly / making silly noises / over the top. He can't just walk down the street, he's got to be doing some version of jumping, skipping, running, legs flailing. I will tell him to walk properly and he will do so for 30 seconds and then be right back to being silly again. It's almost like an impulse he can't help. Ditto for making random silly noises. He always seems to be talking a level above everyone else, even when reminded to lower the volume. I think some other children can find him overwhelming.
He constantly interrupts even when repeatedly reminded not to. He has got better at this though and now sulks whilst waiting his turn. He never seems tired, although he does go to bed when asked and has a food routine. When he does go to bed he can chat to himself for an hour before falling asleep. As an example, we can have a packed day out in London, walking for ages, visiting shops and sites, theatre, dinner, and he will still be messing around and chatting on the train home at 8pm.
When absorbed in something that interests him (watching TV, playing on his switch, building lego, reading a book, playing with his toys or a game he has invented) he can sit still and quietly for hours. If asked to do a specific task e.g. a maths worksheet he will sit and concentrate until it is complete. He's very good in his own environment and most of these behaviours are seen outside of the home. We also frequently go to the cinema and he will sit and watch a 2+ hour film with no fuss. He will sit nicely in a restaurant / cafe for the most part, especially if he's got colouring or a worksheet to occupy him. He knows not to run around, be noisy etc. in these situations.
He is a high achiever as am I (straight A's throughout school life). He has no issues academically, but has struggled to make friendships. He does have some good friends at school now, mostly with the children whose mums I am close with. School has called me in to tell me that he fidgets all the time, he can't keep still, he won't stand in the line quietly. He distracts others, which isn't an issue for him as he is very clever, but can cause issues for the other children. He is always doing something that the other children aren't, for instance, they will all be waiting nicely and DS will be leaping about.
Increasingly I am wondering if there is some ADHD tendencies (as well as undiagnosed in myself). Does anyone have any experience with this and can offer some advice?