What does it mean when you have pulsating or feel heartbeat in ear when lying down?

Experiencing a pulsating sensation or hearing your heartbeat in your ear when lying down, known as pulsatile tinnitus, can be caused by various factors. It may result from increased blood flow in nearby vessels, changes in ear structure, or even anxiety. In some cases, it can indicate underlying health issues, such as high blood pressure or vascular problems. If this sensation persists or is accompanied by other symptoms, it's advisable to consult a healthcare professional for evaluation.