I had a very bad night. Last night I was having visual disturbances -- really frightening -- which I now think were a migraine. I haven't had migraines in many years, ever since I started taking Neuro Mag, a form of magnesium that's very good for migraines. My doctor thinks I take too much magnesium, so I cut back a bit, and I think that's what prompted it. I've told him many times that I NEED this much, but I don't think that young, healthy people understand what it's like to have chronic pain or how to deal with it. So I'm back on my usual magnesium doses. I will need to tell him about this, though.