DS3 is 5. He was dx with ASD a shade over 4. DS1 (12) has ASD.
He used to have really prolonged meltdowns as a toddler. This really was what made me start referrals. He would rampage through the house going absolutely wild. It tailed off quite significantly when his speech and language improved.
But for the last few months he has become very physically aggressive. The cause is usually when he does something accidentally - e.g. say he accidentally hurt someone and they say "ow" He will go off and start lashing out. Transitions are another flash point. There are also occasions when it's happening for reasons I can't fathom at all.
Ignoring him makes he all the more determined to up the ante. DS4 is his usual target but anyone will do. He hits, kicks, pulls hair and spits. He has intentionally urinated on the carpet. Will try and destroy any kind of phone or tablet. This list goes on really. And it's becoming so much more frequent (at least twice a day if not more) and goes on for a good half an hour at a time. He's also quite verbal with it, shouting out insults and such.
The other day he kicked DS1 very hard between the legs (DS1 was just walking past him there'd been no interaction). DS1 immediately retaliated. DS1 is huge for 12, much taller than me and pretty strong. He got DS3 on the floor and slapped him. DS3 didn't so much as flinch. I got them separated but DS3 was desperate to keep fighting with DS1 as he says he really likes it.
When he calms, he will rush around trying to fix things and offer everyone drinks.
I am just at a loss tbh. He's golden at school, and he lives for rewards there. But any attempt to try rewards at home back-fires as he will just set out to sabotage himself. We don't have the space to have a DS3 only area. DS1 and 2 have their own rooms and DS2 is spending increasing amounts of time in his because DS3 frequently goes for him.
I'm thinking about going back to the GP and asking for a referral back to the paediatrician. Not entirely sure what I expect them to suggest though.