Microvascular angina is not very dangerous. Microvascular angina may have symptoms of exertional angina, but coronary angiography shows no obstructive lesions in the coronary arteries and evidence of myocardial ischemia only on an active flat panel ECG exercise test. Microvascular angina is usually induced by exertion and may be related to conditions such as increased cardiac pain sensitivity to sympathetic stimulation and microvascular dysfunction. There may be pain or pressure in the precordial region and retrosternal area after exertion, and the duration, triggers, and intensity of chest pain are variable. Because microvascular angina does not have narrowing or blockage of the coronary arteries, it is generally not very dangerous. If microvascular angina occurs, it is recommended that it be treated under a doctor’s supervision.