Roid rage?

So, back when I saw the neurosurgeon's PA, he put me on a steroid to help with my inflammation. An apparently strong steroid.
I have been losing-my-mind angry all freaking day today. Partly that's because a lot of shit has pissed me off, but even still. If someone had said something weird to me, I may have attacked someone. For real.
I've also been eating myself out of house and home, which I didn't realize was happening until I woke up at 2 this morning. To eat. 2 sandwiches. Oh yeah.
So now, I'm all guilty about not eating well, and eating too much, and being blindingly furious at freaking EVERYONE.
Sorry. *forced grin*
Anyway, so yeah. 'Roid rage? Apparently that's a thing.