Hi, I'm hoping someone can help as I'm struggling!
I have 3 DSs, pre-teen to mid-teens. The middle one , DS11, is waiting to be assessed for autism but the CAMHS waiting list is 18 months+. His behaviour doesn't cause a problem at school - he's timid and compliant - but at home he's angry! He's on a hair-trigger and nothing at all will set him off yelling and screaming about whatever's not fair. He threatens to kill us all and then himself - I think it's a cry for attention rather than a serious threat but it's not great 
I get that he's letting off steam at home because he has to contain everything at school but I'm worried about the effect on my youngest DS - he gets the brunt of DS11's anger because he makes a lot of noise, and he's smaller and easy to threaten and intimidate. The oldest one despises DS11 because he thinks he's weird and unreasonable and either ignores him or sometimes winds him up for entertainment 
We're trying to encourage DS11 to take himself out of the situation to somewhere quiet where he can calm down because that seems to be the only thing that works, but even when he's not upset he's still rude and angry and it's making family life miserable. Any activities or fun get spoiled and I'm sick of being a referee! What can I do? What's worked for you?