Aortic regurgitation is one of the most common causes of death in patients with an aortic dissection. However, the sensitivity of auscultation for detecting a diastolic murmur is very low. Therefore, at our institution, we have added several other physical signs and imaging modalities to diagnose aortic regurgitation in clinical practice. The Quincke pulse is a famous physical sign, but it is also difficult to define without a microscope and microcapillary tonometer. To address this problem, introduced the pocket f lashlight method, whereby a light source is used to illuminate the fingers. We diagnosed aortic regurgitation based on a diastolic murmur and the Quincke pulse as determined using the pocket flashlight method. This method is a simple tool for diagnosing aortic regurgitation in patients with chest pain.