Lise -
I had the twitching thing too when I was really stressed and didn't sleep well. I don't get them anymore now but last year, I had plenty. Your work is getting to you, m'dear. Once that happens, it'll affect the way you treat your loved ones, and that isn't what you want and they certainly don't deserve it. I'm not saying that is happening with you right now, but work related stress does change your mood when you get home.
I started to speak up for myself, Lise. If someone is treating me like sh*t and being rude, I'll tell it to their face. I didn't care if you were my boss because I deserve respect. These b*tches would talk down at you like you're "below" them. Yesterday, my Supervisor sent me a panic email. I had to guess what the cr*p she was talking about. I actually told her in the email (politely and diplomatcally) to basically be MORE SPECIFIC so that I'm not left guessing what she wants. When I started to stand up for myself and say what was on my mind to the person doing the harm, I felt better and was less stressed.
G'luck. and hang in there.