Sudden pins and needles down both arms and burning feeling in back. lasted several seconds. thought i was having a heart attack. no health issues other than tingling in feet & legs - waiting for mri of brain. what could this be? it was frightening?

Episode: Upper back discomfort with radiation of symptoms down the arms can be a cardiac problem but symptoms lasting only seconds make your episode unlikely to be of cardiac origin. Recurrent tingling in feet an legs may be due to a demyelinating disorder like multiple sclerosis, peripheral neuropathy(B12 deficiency, diabetes, alcohol excess) or to deficiencies of calcium or magnesium.?neurologist seen.