Need some theories on this. DS1's current stim is to kneel down and go all rigid arching his back. Or he sits or lies going all rigid and jerky (horrible explanation but does look a bit like a seizure- first time he did it at nursery they sent him home!) He's got really bad recently. Before starting school he'd pretty much stopped- we were all commenting on how he had completely stopped stimming. As soon as he started school it came back but with a vengence. He's fine at school or nursery but as soon as he comes home it starts. If I don't engage him in something it starts immediately (so he will sit there for several hours doing this literally). Turning the TV on makes it worse (I think its the bright lights- they over-stimulate him, in the sensory room at BIBIC he started stimming as soon as the bright bubble lights were turned on).
Is this just a sign of stress? Or of being overstimulated. I'm sure it can't just be stress because he stopped stimming on holiday despite being completely stressed most of the time (we thought it was because there was no tv).
Now if he wakes during the night he lies in bed going all rigid. I hate it- looks awful and really tiring, but I can't give him one to one the entire time obviously. Any tips?