When I raise my arms over my head to stretch them out I get suddenly dizzy/weak my head sort of spins but I do not pass out. I have a lot of medical problems, h/o ovarian ca stage IIIC and recent recurrence, brca1 +, htn, sinus tachycardia, osa, I had a stroke during chemo (no residual deficits) due to upper arm dvt, asd found and corrected in 2013, and after this last round of chemo (ended Nov 2014) i have difficulty keeping my magnesium up, i also have neruopathy (now mild) in my fingers and toes from chemo. But we have worked on all these issues and the above still continues to happen. I am only 47.