Causes of throbbing blood vessels in the ears may include mental stress, high blood pressure and internal carotid aneurysm. 1. Mental stress: patients with long-term mental stress, tension and fatigue lead to disorders of the nervous system, vascular pulsation enhancement, which may induce the feeling of throbbing blood vessels in the ears. 2. High blood pressure: Due to the increase of blood pressure, the pressure of blood vessels increases, and vascular throbbing tinnitus may occur, causing the feeling of throbbing blood vessels in the ears. 3. Internal carotid aneurysm: suffering from internal carotid aneurysm will hear the sound of throbbing blood vessels in the ears, which is mostly unilateral and enhanced during activities, while the throbbing sensation can be weakened or disappeared when compressing the carotid artery. If the patient’s ear throbbing symptoms continue to be unrelieved, it is necessary to consult a doctor in time and have a systematic examination to make a clear diagnosis, so as to avoid delaying the condition.