Symptoms of pulsatile tinnitus include the sound of hearing your heartbeat, according to Harvard Health Publications. The condition is particularly noticeable when lying down because more blood reaches the arteries in the head.
Although tinnitus has a number of causes, pulsatile tinnitus is a rare form of the condition and is the result of a blood vessel disorder, notes Mayo Clinic. Causes include head and neck tumors, atherosclerosis, high blood pressure, turbulent blood flow and malformation of capillaries. The condition tends to become more apparent as people get older. With advancing age, arteries generally tend to harden, and blood flow in the stiffened arteries becomes more turbulent, explains Harvard Health Publications.