I also have an autistic son, the best thing God could have given me, and seemed to get worse with age as well. When my son starts to scream, I give him a lukewarm bath and it seems to calm him, you can also try a diet chagne such as no gluten if you havent tried that already... I have also read somewhere that cod liver oil helps ( not a doctor so please speak with one beofore you change or interduce something new.) Some other things that work for my son is a car ride, a snack of gummy fruit snacks. Or just a change in the room he is in.
But if all else fails then talk with his Doctors if he needs meds it dosent mean you failed as a parent... And the late night screaming try talking to the people next door and explaing your sons disorder to them, they may understand and become helpful....
I can't say know the best answer for this, but I suspect I know the people who do. A great bunch of parents with a wide range of children on the autistic spectrum: ASD Friendly. Forum message boards, and live chat most evenings (UK time) "ASD Friendly is a close-knit community of parents and carers of people with Autism and Asperger's Syndrome.
Established in April 2003, ASD Friendly brings us together to share tips, vent frustrations and generally have a laugh about things that other people would never understand. We know that caring for a disabled child is difficult and rewarding; it's good to know that we don't need to do it all alone." As well as parents there are a few of us adults on the autistic spectrum as well.
(Nothing to sell, no one odd view or therapy to promote.) And those on the autistic spectrum vary so much. There is no one-size-fit-all formula, I'm afraid. Springing to mind just as one set of possibilities are sensitivities: reactions to foods, triggers from vision, sound, smell, touch... The triggers can seem tiny or even non-existent to someone who does not have the same sensitivity.
And the reaction may not be in real-time: sometimes the overloading event was a good while before the reaction: the processing of stress or distress can be (but is far from always) delayed, by hours, or even more. Best wishes.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.