Cardiac syndrome X is a historic term for microvascular angina, angina (chest pain) with signs associated with decreased blood flow to heart tissue but with normal coronary arteries. The use of the term CSX can lead to the lack of appreciation of how microvascular angina is a debilitating heart related pain condition with the increased risk of heart attack and other heart problems. Many mainly women can have difficulty accessing the specialist care of a cardiologist for this reason. This is a distinct diagnosis from Prinzmetal's angina.