YES but I'm not sure if it's due to fibro or not. I have sinus problems, and I've been getting dizzy fairly often for *years*. I've only been suffering due to the fibro for three months. However, many times in the last three months it goes beyond normal dizzy for me; I'll be standing or walking and all of the sudden everything starts spinning so fast and goes black at the same time and I fall. I have caught myself and not actually hit the floor each time so far, but it's scary.