Erin, I'm sorry you are having Pred insomnia. I've never had it but it can't be good for the body.

What is better for your back than taking drugs that could make your MG worse is getting a really good electrical massager. I've had to have a lot of physical therapy from my back getting really weak and cramping/spasming. Do you get those areas that are really hard and sore? Those are the areas you need to dig into with hands (yeah, like an MGer can do that) or with a massager. Or ask your neuro for PT. It really works. Don't get one of those little ones, although they can help a bit. Get a professional one.

I hope you can get some relief somehow.

Annie