Hearing your heartbeat in your right ear is a condition called pulsatile tinnitus, and it happens because blood flow near your ear is creating a sound loud enough for your inner ear to pick up. Unlike regular tinnitus (a constant ringing or buzzing), this type of tinnitus pulses in sync with your heart. In about 70% of cases, doctors can identify a specific underlying cause with the right testing, which makes this a symptom worth investigating rather than ignoring.
Why It Happens in the Right Ear Specifically
The right ear is actually the more common side for this symptom, and anatomy explains why. The veins that drain blood from your brain are naturally larger and carry more flow on the right side. The sigmoid sinus, a major drainage channel that runs just behind your ear, is more often dominant on the right. When there’s a gap or thinning in the bone separating that channel from your inner ear, the sound of rushing blood gets through. Studies show that abnormalities of the sigmoid sinus involve the right side more often than the left, likely because of this natural right-side dominance in the brain’s venous drainage system.
The jugular bulb, a large pool of venous blood sitting just below the middle ear, is also normally positioned on the right side. When this structure sits higher than usual or when the thin shell of bone covering it has a gap, the turbulent flow of blood becomes audible. These anatomical quirks are common and often cause no problems at all, but in some people they produce that rhythmic whooshing or thumping sound.
The Most Common Causes
The sound you’re hearing comes from turbulence in blood flow. Think of it like water rushing through a kinked garden hose: when blood moves smoothly, it’s silent, but when something disrupts that smooth flow, it generates vibrations that travel through bone to your cochlea (the hearing organ in your inner ear). The causes fall into a few categories.
Vein-Related Causes
These are the most frequently identified sources. A high-riding jugular bulb, a sigmoid sinus with a gap in its bony covering, or a small outpouching (diverticulum) of the jugular bulb can all create turbulence close enough to the ear for you to hear it. Narrowing of the veins that drain the brain, called venous sinus stenosis, affects the right side in roughly 63% of cases. These conditions are structural and don’t necessarily mean anything is “wrong” with your health in a broader sense, but they are the source of the noise.
Artery-Related Causes
The internal carotid artery runs through a bony canal very close to the inner ear. If this artery narrows due to plaque buildup (atherosclerosis), the blood squeezing through that tight spot creates turbulent flow. That turbulence vibrates through the surrounding bone directly into the cochlea. This is more common in people with risk factors for cardiovascular disease, such as high blood pressure, high cholesterol, or smoking. In documented cases, opening the narrowed artery with a stent has completely resolved the tinnitus.
Small Vascular Tumors
A glomus tympanicum is a small, benign growth made up of tiny blood vessels that can form in the middle ear. Because it’s packed with blood vessels, it pulses with your heartbeat and creates an audible sound. These growths are slow-growing and not cancerous. A doctor can sometimes see one during an ear exam as a reddish mass behind the eardrum that pulses visibly. They can cause hearing loss if they grow large enough to block sound transmission through the middle ear.
Increased Pressure Around the Brain
A condition called idiopathic intracranial hypertension (IIH) raises the pressure of the fluid surrounding the brain. This elevated pressure can compress veins and alter blood flow patterns near the ear, producing pulsatile tinnitus. IIH most commonly affects women of childbearing age who carry extra weight. Other symptoms include headaches, double vision, and pain behind the eyes. Interestingly, research from a study published in The Laryngoscope found that patients whose primary complaint was pulsatile tinnitus actually had lower fluid pressure measurements than those presenting mainly with headaches and vision problems, suggesting it doesn’t take extreme pressure elevations to trigger the sound.
Inner Ear Bone Thinning
Superior semicircular canal dehiscence is a condition where a paper-thin layer of bone in the inner ear wears away or never fully formed. This creates an extra “window” into the inner ear that lets internal body sounds leak in. People with this condition often hear not just their heartbeat but also their own footsteps, eye movements, or voice resonating unusually loudly inside their head. The condition can also cause dizziness triggered by loud sounds or straining.
What Happens When You Get It Checked
A doctor will typically start with a physical ear exam, sometimes using a microscope or small camera to look at the eardrum for visible abnormalities like a reddish pulsating mass or a bluish tint that suggests a blood vessel sitting too close to the surface. They may also listen to the area around your ear and neck with a stethoscope. If they can hear the pulsing sound too, that’s called “objective” pulsatile tinnitus and strongly points to a vascular cause.
Imaging is the key next step. UK guidelines from NICE recommend that everyone with pulsatile tinnitus be offered imaging to rule out serious underlying causes. The specific type of scan depends on what your doctor suspects. CT scans show bony abnormalities like gaps in the skull base or a high-riding jugular bulb. MRI with specialized vascular sequences (MRA for arteries, MRV for veins) maps out blood flow and can reveal narrowing, abnormal connections between arteries and veins, or tumors. Sometimes a CT angiogram, which uses contrast dye to highlight blood vessels in fine detail, provides the clearest picture.
Your eyes may also be checked for signs of increased pressure around the brain, since swelling of the optic nerve is a hallmark of intracranial hypertension.
How It’s Treated
Treatment depends entirely on what’s causing the sound. That’s what makes getting a diagnosis so important: pulsatile tinnitus isn’t one condition but a symptom of many different ones, and the solutions vary widely.
For venous sinus narrowing, a minimally invasive procedure to widen the vein with a stent can resolve the tinnitus. For carotid artery narrowing, treating the atherosclerosis (whether through stenting or other vascular interventions) addresses both the tinnitus and the cardiovascular risk. Small vascular tumors in the middle ear can be monitored if they’re tiny and not causing hearing loss, or treated with radiation or surgery if they grow. Intracranial hypertension is typically managed with weight loss and medications that reduce fluid production in the brain, which often quiets the pulsatile sound as pressure normalizes. Bone thinning over the semicircular canal can be surgically repaired if symptoms are severe enough to affect daily life.
In the roughly 30% of cases where no specific cause is found on imaging, the tinnitus may still be manageable. Sound therapy, where you use background noise to make the pulsing less noticeable, can help. Some people find that the sound becomes less bothersome over time as their brain learns to filter it out, similar to how you stop noticing the hum of a refrigerator.
What to Pay Attention To
Pulsatile tinnitus on its own is not an emergency, but certain combinations of symptoms suggest you should be evaluated promptly. If the heartbeat sound in your ear comes with new headaches, changes in your vision (especially double vision or brief blackouts of vision), or if the sound appeared suddenly after a head or neck injury, these warrant faster workup. A sound that changes when you turn your head or press on your neck is actually a useful clue for your doctor, so take note of anything that makes it louder, softer, or disappear temporarily.