I am 29, thin, non-smoker/social drinker only, no drugs. Out of the blue a little over a 18 mos. ago, I began having chest pain/burning, left arm pain, left shoulder pain, upper back pain/burning, neck and jaw discomfort. Pain most days, with a week or so respite between consistant 10-14 bad days. Thought to be GERD (although PH test showed only mild acid, out of proportion with symptoms) but no response to therapy and have been assured by 2 different psychologists that my pain was not anxiety related, finally got a second opinion from a cardiologist. He thinks I have cardiac syndrome X. My concern is if it's really Prinzmetal's. Doc feels that it is not b/c my holter monitor was clear, however when I wore the monitor, I was not having a bad day. Are my symptoms consistant with Prinzmetal's or more consistant with Syndrome X? Excersise stress, echo, ECG, thallium stress all normal, never had an abnormal lab or elevated levels. What tests should I request to rule out Prinzmetal's? Much thanks.