I shut down when people scream, whether it's at me or someone else or I'm given terrible news.

Don't forget, if things get too bad, you always have the hospital. I hope you can calm down and get some sleep tonight. It hurts less after you've cried and time has passed...at least that's what happens to me after someone else yells. I kind of get this blank look on my face and can't stop staring at nothing. I guess that's catatonia, but no dr has ever seen it happen to me.