It is either vertigo or non-vertigo related according to this site I just found:
www.pneuro.com/publications/dizzy/
I had a case of vertigo once. It was really weird. I went to get out of bed and all of a sudden it seemed like the room was upside down. It caused me to sort of fall over to one side.This only happened to me that one day and I did not have a repeat. Think this was before I was on dialysis. Never did find out what caused it at the time, but have since read a little about vertigo. Skimming the site given it says dizziness can be related to anemia. Quite a lot of info on the subject- looks very interesting.