Hi! I get huge canker sores and multiple every time I get a flare up. They completely predict when my flare is going to happen each and every time. In addition to the mouth ulcers, I get night sweats 2-3 days before the flare occurs. It's the worst, however a good indicator of when I am going to end up sick. I am actually in a nasty flare now and will probably be admitted for IV steroids since my 40 mg of prednisone doesn't seem to be kicking this thing. I was diagnosed 5 years ago and have not yet been fully in remission.