Question: What causes Prinzmetal's variant angina ?
Answer: What causes Prinzmetal's variant angina? Prinzmetal's variant angina is caused by coronary artery spasms. A coronary artery spasm is a temporary, abrupt, and focal (restricted to one location) contraction of the muscles in the wall of an artery in the heart. This spasm constricts the artery, slowing or stoping blood flow. A prolonged spasm can cause chest pain, or even a heart attack (myocardial infarction).
Source: GARD