Hearing your heartbeat in your right ear is a condition called pulsatile tinnitus, and it happens because blood flow near your ear becomes loud enough for you to perceive. Unlike regular tinnitus (a constant ringing or buzzing), pulsatile tinnitus pulses in rhythm with your heart. The right ear is actually the more common side for this to occur, and there’s a specific anatomical reason for that.
Why the Right Ear Is More Common
The right jugular vein is the dominant drainage vein for the brain in 70% to 80% of people. Because more blood flows through the right side, any turbulence or pressure change in that vessel is more likely to produce an audible sound on the right. Variations in the jugular bulb, the expanded portion of the vein that sits just below the middle ear, can make this worse. A jugular bulb that rides unusually high, sits in an abnormally lateral position, or has a small outpouching (called a diverticulum) creates local flow disturbances that you hear as a rhythmic whooshing or thumping.
Outpouchings of the sigmoid or transverse sinuses, the large venous channels inside the skull, can also bulge through the inner layer of bone and generate turbulent flow that registers as pulsatile tinnitus. These are structural quirks rather than diseases, but they explain why one ear picks up the sound while the other stays quiet.
How Blood Flow Becomes Audible
Blood normally moves through your vessels in smooth, orderly layers. When something disrupts that smooth flow, it becomes turbulent, and turbulent flow generates vibrations your inner ear can detect. Think of it like water running quietly through a garden hose versus spraying noisily through a kink. Several conditions create that “kink” effect near the ear:
- High blood pressure increases the force against vessel walls, making blood flow noisier in arteries close to your ears.
- Atherosclerosis (plaque buildup inside artery walls) narrows the channel and forces blood through a tighter space, creating turbulence.
- Carotid artery narrowing is a specific form of this, where the main artery running up each side of your neck becomes partially blocked.
- Abnormal connections between arteries and veins (arteriovenous malformations) allow high-pressure arterial blood to rush directly into low-pressure veins, generating significant noise.
Increased Pressure in the Skull
One of the most common causes overall is a condition called idiopathic intracranial hypertension (IIH), where the fluid surrounding the brain builds up excess pressure without an obvious reason. Between 33% and 63% of people with IIH experience pulsatile tinnitus, and for some, the heartbeat sound in the ear is the very first symptom that brings them to a doctor.
IIH predominantly affects women of childbearing age who carry extra weight, and its incidence has more than doubled over the past two decades as obesity rates have climbed. Interestingly, patients whose primary complaint is pulsatile tinnitus tend to have lower spinal fluid pressures than those who present with the more classic symptoms like headaches and vision changes. That means even mildly elevated pressure can be enough to produce the sound. Pulsatile tinnitus from IIH is thought to arise from rhythmic fluctuations in cerebrospinal fluid pressure that the inner ear picks up on.
Bone Thinning in the Inner Ear
A condition called superior canal dehiscence syndrome (SCDS) involves a small opening in the thin bone covering one of the inner ear’s balance canals. This opening acts as an extra “window” into the inner ear, allowing bone-conducted sounds to reach the hearing organs more efficiently than normal. The result is a kind of internal amplification: you hear your own heartbeat, your footsteps, even your eye movements. People with SCDS often describe their own voice sounding unusually loud or distorted.
SCDS is diagnosed through a combination of a high-resolution CT scan showing the bone gap and hearing tests that reveal better-than-normal bone conduction. It is a structural problem, not something that develops from infection or lifestyle.
Benign Tumors of the Middle Ear
A glomus tympanicum tumor is one of the most common benign growths in the middle ear. These small, highly vascular masses grow from nerve-related tissue along the middle ear’s nerve pathways and appear as a reddish spot behind the eardrum. Because they are packed with tiny blood vessels and sit right next to the structures that transmit sound, they frequently cause pulsatile tinnitus. A doctor can sometimes spot one during a careful examination with an ear scope. Imaging with contrast-enhanced CT confirms the diagnosis. Small ones may cause no symptoms at all and are found by accident, while larger ones can gradually affect hearing or cause dizziness.
How Doctors Figure Out the Cause
The recommended first step in evaluating pulsatile tinnitus is an MRI with magnetic resonance angiography (MRA). This combination reliably identifies the most serious potential causes, including abnormal blood vessel connections, tumors, and signs of elevated skull pressure. A comprehensive MRI protocol includes sequences that map blood flow in both arteries and veins, detect abnormal tissue, and assess the brain itself.
When MRI is unavailable or not an option (for example, if you have certain metal implants), CT with angiography serves as an alternative. Carotid ultrasound can screen for artery narrowing and atherosclerosis inexpensively, but it cannot fully characterize many of the causes listed above, so it typically supplements rather than replaces MRI. More invasive angiography, where dye is injected directly into blood vessels under X-ray, is reserved for cases where noninvasive imaging raises suspicion of a high-risk vascular problem or when a treatable cause has been identified and doctors need finer detail before intervening.
Treatment Depends Entirely on the Cause
There is no single treatment for pulsatile tinnitus because the right approach depends on what is generating the sound. Identifying the underlying cause is essential, both to relieve the symptom and to prevent complications from conditions that could worsen over time.
If high blood pressure is the driver, bringing it under control often reduces or eliminates the sound. For IIH, weight loss is a cornerstone of treatment, sometimes combined with medications that lower cerebrospinal fluid production. SCDS can be surgically repaired by plugging or resurfacing the bony defect, which resolves the amplified internal sounds. Glomus tympanicum tumors are typically removed surgically when they cause symptoms. Vascular malformations may be treated with embolization, a procedure that blocks the abnormal vessel connection, or with surgery.
When no surgical target is identified, medications that slow heart rate and reduce blood pressure, such as beta-blockers, can make the thumping less noticeable by reducing the force and speed of blood flow near the ear. Some patients also benefit from anti-anxiety medications that dampen the brain’s focus on the sound, making it easier to carry on with daily life.
Symptoms Worth Taking Seriously
Pulsatile tinnitus on its own is not an emergency, but certain accompanying symptoms point to causes that need prompt attention. Headaches that worsen when lying down, brief episodes of vision going dark or blurry, double vision, or any new neurological symptoms like weakness or numbness on one side of the body warrant urgent evaluation. These can signal elevated intracranial pressure or a vascular problem that carries stroke risk. Sudden hearing loss alongside the pulsing sound also calls for a faster workup, as does pulsatile tinnitus that begins after a head injury.
Even without those red flags, pulsatile tinnitus that persists for more than a few days is worth investigating. Unlike the common ringing type of tinnitus, the pulsatile form has an identifiable structural or vascular cause in the majority of cases, and many of those causes are treatable.