Here's how things stand. I have taken a high dose of antihistamine every 4-6 hours for the last 24 hours. I've slept a lot and I itch a bit less, but my rash is unchanged. Actually it is slightly worse.
I called off work tomorrow. Tomorrow morning I'll decide if I've had any improvement overnight, and if I haven't I'll call the doctor. That means I probably will take steroids. Steroids are very likely to trigger mania, just as my body adjusts to the withdrawl of a mood stabilizer.
From that point I don't know what happens; I assume it will be take it as it comes time. Which is pretty hard because I know how horrible steroids can be.
I'm trying really hard to be strong. Eventually this will resolve. I guess that's the important thing. Somehow it will end.