I was just diagnosed with that. A lot of other things were ruled out first as this is a relatively rare condition. It also goes by variant angina and coronary spasm. My doctor prescribed nitroglycerin. I can take up to three pills, one every five minutes, before calling 911. If the pills stop the pain I can stay home. It usually occurs when I’m sleeping or relaxed. My doctor said the nitroglycerin is good for heart attack too. It’s the same medication the EMT’s would give me if I called 911. It’s not too bad of a diagnosis but things can get complicated if you have other heart conditions. I was very relieved to get this diagnosis because I have been to the ER s five times with chest pains, with no heart attack and no explanation. Now instead of automatically going to the ER I can try the nitro pills and hopefully stay home. Best of luck to you and please post again and let us know how you are doing.