I Can Hear Blood Rushing in My Ears: What Should I Do?

Hearing a rhythmic whooshing or rushing sound in your ears, usually in time with your heartbeat, is a condition doctors call pulsatile tinnitus. Unlike the steady ringing or buzzing of ordinary tinnitus, pulsatile tinnitus almost always has a specific, identifiable physical cause.¹ That distinction matters, because it means the sound you’re hearing is not a phantom signal your brain invented. Something in or near your head is actually producing it, and finding out what that something is should be your first step.

Why This Is Different From Regular Tinnitus

Most people with tinnitus hear a constant tone, hiss, or buzz that has no external source. That kind of tinnitus is extremely common and, frustratingly, rarely traceable to a single fixable cause. Pulsatile tinnitus works differently. It requires both a functioning ear and a real, physical source of sound, which is usually turbulent or accelerated blood flow somewhere near the ear.¹ You might notice it gets louder when you exercise, lie down on one side, or turn your head a certain way. Some people describe it as a thumping, others as a low hum or a sound like ocean waves timed to each heartbeat.

Because there’s a genuine physical source, doctors can sometimes hear it too, by placing a stethoscope near your ear or jaw. In practice, though, most cases are hard to pick up externally even when a clear vascular cause exists.² That doesn’t mean the sound is imaginary. It means the anatomy of the skull does a good job of muffling what’s happening inside, and more specialized tools are often needed to confirm the source.

The Most Common Causes

The causes of pulsatile tinnitus span a surprisingly wide range. In one clinical series, the most frequent explanation was highly vascular tumors of the temporal bone (the bone surrounding the ear), accounting for about 16% of cases, followed by venous anomalies at around 14% and arterial narrowing at roughly 9%. Dural arteriovenous fistulas, inflammatory changes, and elevated pressure inside the skull each accounted for about 8%.¹ No single cause dominates, which is why working through the possibilities methodically matters.

For a practical understanding, those causes group into a few broad categories worth knowing about.

Problems in the Veins Near Your Ear

The sigmoid sinus is a large vein that drains blood from the brain and runs right behind the ear. If the bony wall separating that sinus from the middle ear is thin or missing, the turbulence of blood flowing through the sinus can transmit directly into the ear canal. Two related conditions, sigmoid sinus diverticulum (a small outpouching of the vein) and sigmoid sinus wall dehiscence (a gap in the bone), are well-recognized triggers.³ Imaging with CT angiography can usually identify these.⁴

Another venous cause is idiopathic intracranial hypertension, sometimes called IIH. In this condition, the pressure of cerebrospinal fluid around the brain is abnormally high for reasons that aren’t fully understood, and that extra pressure compresses the large venous sinuses. Classic symptoms include headache, visual changes, and pulsatile tinnitus.⁵ IIH is more common in younger women, particularly those carrying extra weight, and it deserves prompt attention because untreated cases can threaten vision. Interestingly, researchers have found that even when pulsatile tinnitus in IIH patients occurs on only one side, the narrowing of the venous sinuses on imaging doesn’t always neatly predict which ear is affected.⁶

Arterial Narrowing and Turbulent Flow

When an artery near the ear becomes narrowed, blood speeds up as it squeezes through the tight spot, creating turbulence that you can hear. The internal carotid artery, which runs right beneath the base of the skull on its way to the brain, is the usual culprit. Atherosclerotic buildup is a known cause, though not a common one.⁷ In reported cases, relieving the narrowing through surgery or stenting has resolved the tinnitus completely.⁸ This cause tends to show up in older adults with cardiovascular risk factors like high blood pressure, high cholesterol, or a history of smoking.

Abnormal Vascular Connections

Dural arteriovenous fistulas are abnormal shortcuts between small arteries in the tough membrane surrounding the brain and the veins that drain it. Because arterial blood is being routed directly into veins that aren’t built to handle that pressure, the result is noisy, turbulent flow that the ear easily picks up. These fistulas are rare, but they matter because some types carry a risk of bleeding or stroke if left untreated.⁹ In one study of patients with pulsatile tinnitus who underwent detailed angiography, about a third turned out to have a dural arteriovenous fistula.¹⁰ That’s a high proportion and speaks to why thorough imaging is so important.

Middle Ear Tumors and Structural Oddities

A glomus tympanicum tumor is a small, highly vascular growth that develops on the floor of the middle ear. These tumors are benign, meaning they don’t spread to other parts of the body, but they’re richly supplied with blood vessels and produce a characteristic pulsatile sound.¹¹ On the bright side, surgical removal reliably stops the tinnitus. In one series, every patient who had surgery for this tumor experienced immediate resolution of the pulsatile sound, with no recurrence during follow-up.¹²

Rarer structural causes include a persistent stapedial artery, a fetal blood vessel that normally disappears before birth but occasionally sticks around. It can show up as a pulsatile mass behind the eardrum, sometimes discovered only incidentally during ear surgery.¹³ Superior canal dehiscence, a tiny hole in the bone covering one of the inner ear’s semicircular canals, can also amplify internal body sounds, sometimes to the point where you hear your own eye movements or footsteps. This condition typically also involves dizziness triggered by loud sounds or pressure changes.

Temporary and Systemic Triggers

Not every case of pulsatile tinnitus points to a structural abnormality in the head. Conditions that increase blood flow throughout the body or change the blood’s consistency can produce the same whooshing sound. Anemia is one of the better-studied examples. When hemoglobin drops, blood becomes less viscous and flows faster, creating turbulence that wasn’t there before. In patients with pulsatile tinnitus linked to anemia, younger patients and those whose hemoglobin improved more substantially after treatment were more likely to notice the sound go away.¹⁴

Hyperthyroidism, pregnancy, and severe anxiety can all temporarily ramp up cardiac output and blood flow enough to generate audible turbulence. High blood pressure, whether chronic or spiking during a stressful moment, can do the same. If you first notice the rushing sound during a period of intense exercise, dehydration, or after a significant change in medication, these transient causes are worth considering. They don’t require imaging; they require treating the underlying condition or waiting for the state to pass.

When You Should See a Doctor

Because pulsatile tinnitus usually has a real cause, the default recommendation is to get it evaluated, especially if it persists for more than a few days or keeps coming back. A few scenarios warrant more urgency:

• New headaches with vision changes: this combination alongside pulsatile tinnitus strongly suggests elevated intracranial pressure, which can damage the optic nerves if untreated.
• Sudden onset after head trauma: traumatic dural arteriovenous fistulas can develop after injuries and may need intervention.
• One-sided pulsatile tinnitus that you or someone else can hear: an audible bruit raises the possibility of a vascular malformation or fistula that carries stroke risk.
• Neurological symptoms: weakness, numbness, difficulty speaking, or confusion alongside the sound are red flags for vascular problems that need emergency evaluation.

Neurologists in particular should be alert to pulsatile tinnitus, because when it appears alongside other symptoms and signs, it can point toward a specific neurological or neurovascular diagnosis.¹⁵ For isolated pulsatile tinnitus with no alarming accompanying symptoms, an evaluation is still worthwhile but less time-sensitive. Your primary care doctor or an ENT specialist is usually the right starting point.

How Doctors Track Down the Source

The diagnostic workup starts with a thorough history and physical exam. Your doctor will want to know which ear is affected, whether the sound changes with head position, whether pressing on your neck alters it, and what other symptoms you have. They’ll listen around your ear with a stethoscope and examine your eardrums.

From there, imaging is the main tool. CT angiography and MR angiography are the most common first-line studies. They can reveal venous anomalies, arterial narrowing, middle ear tumors, and some vascular malformations. If those come back inconclusive but suspicion remains high, digital subtraction angiography (DSA) is the gold standard. It’s an invasive test that involves threading a catheter into the blood vessels and injecting contrast dye, but it’s the most sensitive way to detect small dural arteriovenous fistulas that other imaging can miss.

Researchers have also been developing tools to objectively measure the sound itself. One approach uses a tiny microphone sealed inside the ear canal to record the pressure waves generated by turbulent blood flow, then analyzes the recording’s frequency pattern to distinguish between different causes.¹⁶ In one study using this kind of acoustic measurement, certain cutoff values in the frequency analysis detected dural fistulas with perfect sensitivity, meaning no fistulas were missed.¹⁰ These tools are still mostly confined to specialized centers, but they represent a promising step toward quicker, less invasive screening.

Treatment Depends Entirely on the Cause

There is no one-size-fits-all treatment for pulsatile tinnitus, precisely because it’s a symptom rather than a disease. The right intervention depends on what’s producing the sound.

For venous causes, particularly sigmoid sinus narrowing associated with elevated intracranial pressure, venous sinus stenting has emerged as a remarkably effective option. In a prospective trial, 39 out of 42 patients experienced complete resolution of their pulsatile tinnitus after stent placement, with no serious side effects.¹⁷ A larger pooled analysis covering over 600 patients found that about 89% achieved complete resolution and roughly 92% had at least some improvement.¹⁸ Those are strong numbers for any procedural intervention, though stenting does require lifelong blood-thinning medication to keep the stent open, and it’s not appropriate for every patient.

For middle ear tumors like glomus tympanicum, surgery is the standard approach and works well, as noted above. Arterial stenosis can be addressed with carotid endarterectomy or stenting, depending on the location and severity. Dural arteriovenous fistulas are typically treated through embolization, a procedure where the abnormal connections are sealed off using materials injected through a catheter, or occasionally through surgery or focused radiation.

When the cause is systemic, such as anemia or hyperthyroidism, treating that underlying condition is the treatment for the tinnitus. For IIH, weight loss, medications to reduce spinal fluid production, and sometimes surgical shunting can all lower intracranial pressure and quiet the sound.

What If No Cause Is Found

In some cases, despite a thorough workup, no identifiable cause turns up. This can be genuinely frustrating, especially because you know the sound is real and you were told a cause should exist. It may mean the vascular anomaly is too small for current imaging to detect, or that a combination of minor factors, like slightly turbulent flow plus slightly thin bone, creates a sound that no single test flags as abnormal.

When no treatable cause is found, management shifts toward coping strategies. A Cochrane review of sound therapy, which involves using external sounds to mask or compete with tinnitus, found no significant evidence that it reduces the loudness or overall severity of tinnitus compared to counseling, relaxation techniques, or simple exposure to background sounds.¹⁹ That doesn’t mean background noise is useless. Many people find that a fan, white noise machine, or ambient music at bedtime makes the sound less intrusive. It just means the formal evidence for sound therapy devices as a superior solution over simpler approaches is weak.

Cognitive behavioral therapy has a more robust evidence base for tinnitus distress in general. It doesn’t eliminate the sound, but it changes the emotional reaction to it, which for many people is the part that actually disrupts daily life and sleep.

The Mental Health Side

Living with a persistent pulsatile sound that nobody else can hear takes a real psychological toll. In a study of patients with pulsatile tinnitus, about 46% showed moderate to severe depression and roughly 37% had moderate to severe anxiety. Higher tinnitus severity scores were strongly associated with both conditions.²⁰ These aren’t trivial numbers, and they suggest that anyone dealing with persistent pulsatile tinnitus should be screened for depression and anxiety as a routine part of care, not as an afterthought.

Part of the distress comes from diagnostic uncertainty. Many patients bounce between specialists for months or years before getting a clear answer, and some are initially told the sound is “just tinnitus” without the crucial distinction between pulsatile and non-pulsatile forms being made. If you feel your concern has been dismissed, it’s reasonable to push for imaging or to ask for a referral to a neurotologist (an ear specialist with additional training in neurological conditions) or an interventional neuroradiologist who deals with vascular tinnitus regularly.

Rare Causes Worth Knowing About

A handful of uncommon causes occasionally surprise both patients and doctors. Fibromuscular dysplasia, a non-atherosclerotic condition that causes abnormal cell growth in artery walls, can affect the carotid or vertebral arteries and produce pulsatile tinnitus in younger patients, particularly women, who have none of the usual cardiovascular risk factors. Thyroid nodules pressing on the carotid sheath have been reported as a cause, as have vascular tumors at the skull base beyond the glomus family. Even severe temporomandibular joint dysfunction can occasionally create rhythmic sounds that mimic vascular pulsatile tinnitus, though those tend to correlate more with jaw movement than with the heartbeat.

A persistent stapedial artery, the fetal vessel mentioned earlier, is sometimes discovered incidentally during middle ear surgery for other reasons.¹³ In most cases it causes no symptoms at all, but when it does produce pulsatile tinnitus, simply knowing it’s there is useful because accidentally cutting it during ear surgery could cause significant bleeding. This is a situation where the diagnosis matters for surgical planning even if the artery itself isn’t directly treated.

Practical Steps You Can Take Right Now

If you’re hearing a rhythmic rushing sound in your ears, a few things are worth doing before or alongside a medical evaluation:

• Track the pattern: note which ear it’s in, whether it changes with position, exercise, or time of day, and whether pressing gently on the side of your neck changes or stops the sound. These details help your doctor narrow the possibilities quickly.
• Check your blood pressure: if you have access to a home cuff, take several readings at different times. Uncontrolled hypertension is both a cause and an aggravating factor.
• Review your medications: some drugs, including certain antibiotics, high-dose aspirin, and hormonal contraceptives, can influence intracranial pressure or blood flow. Bring a full medication list to your appointment.
• Don’t accept a brushoff: if a doctor tells you “it’s just tinnitus” without asking whether the sound is rhythmic and pulse-synchronous, they may be treating the wrong condition. Pulsatile tinnitus deserves its own workup.

Most causes of pulsatile tinnitus are treatable once identified, and some of the most effective treatments available, like venous sinus stenting and tumor removal, have resolution rates above 85%. The challenge is usually getting to the right diagnosis, not treating it once you have one. Persistence in pursuing answers, and making sure the right imaging is done, tends to pay off.