Hi and welcome,
The screaming I've been feeling a lot like that lately. I have even screamed out loud when I've been in the car myself (driving through bush so I don't get weird looks).
I think there is only so much our minds can take and when it all builds up you've just got to release it. My 2 youngest have ADHD and screaming is normal for them, so I also scream back at them which they think is a big laugh but I feel relief from it.
Everyone here is really nice to talk to, I was healthy until last year and got sick again. I think all we can do is except our illnesses and work at getting better again. I know that I look back and think 15yrs on and off of illness but a real lot of that time I was under treatment and better, we've got to look at the positive side.