Ugh just Ugh:
I don't want to upset you or anything by disagreeing with you and your forum friends but I would invite some friends of yours to spend some time with you if you can't have family do it. What you're describing is quite common with high doses of Prednisone. 40 to 60 mg is considered pretty high. Most docs when you giving that amount will tell you to be in for a roller coaster of a ride which will go from crying to laughing to anger to crying, etc...
I don't believe going to the ER will help you unless you're going to hurt yourself. Other than for that one situation I would get some loved ones or some good company to hang out with you knowing what your going through. I agree with some previous posts that as you come down in dosage in regards to the pred you will feel more and more stable.
Just hold on and calm down. This forum is with you for the ride. Stay strong.
MyUC