What Causes Prickling In Neck,tingling In Arms,dizziness And Unconsciousness?

I am having strange prickling in my neck that move up I feel dizzy and nausea 3 weeks ago was so severe I lost consciousness. My arms also have sort off electric like feelings my neck and face get red also. Every day after I have been up awhile These symptoms start and progressively get worst. I have had a neuclar stress test and was fine also have had ct scan but have not gotten results as of yet. I get very tired easily and am not functioning well at all. I am 60 female, have had 3 stents in LAD and have left internal occluded temporal artery. Ex smoker for over 4 years have excercised and tried to eat well and just keep have one ironic problem after another. But have never passed out until recently. My weight is 126 at 5 ft 2. What kinda of test do I need to be seeking?