Hearing a rhythmic whooshing, thumping, or pulsing sound in your ear can be unsettling, particularly when the sound seems to match your heartbeat. This condition is known as pulsatile tinnitus. Unlike the steady ringing commonly associated with tinnitus, pulsatile tinnitus often has a recognizable rhythm.

Understanding pulsatile tinnitus causes is important because this type of tinnitus can sometimes be associated with changes in blood flow or conditions involving blood vessels near the ear. Some explanations are relatively harmless, while others require medical evaluation.

This guide explains common pulsatile tinnitus causes, related symptoms, how the condition is diagnosed, available treatments, and when you should seek medical attention.

What Is Pulsatile Tinnitus?

Pulsatile tinnitus is the perception of a rhythmic sound when there is no corresponding external sound. People may describe it as:

• Whooshing
• Pulsing
• Thumping
• Beating
• Swishing
• A heartbeat in the ear

The sound may occur in one or both ears and can be intermittent or persistent. For many people, it becomes more noticeable at night or in quiet environments.

A key difference from ordinary tinnitus is that pulsatile tinnitus may synchronize with the heartbeat.

What Are the Most Common Pulsatile Tinnitus Causes?

There isn't one explanation that applies to everyone. Many pulsatile tinnitus causes involve changes in blood flow through vessels located close to structures involved in hearing.

High Blood Pressure

High blood pressure can increase the force of blood moving through arteries. In some circumstances, this increased or turbulent blood flow may become noticeable as a pulsing sound.

High blood pressure often produces no obvious symptoms, so regular blood pressure checks are important.

If hypertension is contributing to the problem, properly managing blood pressure may help.

Atherosclerosis

Atherosclerosis occurs when plaque accumulates inside arteries, causing them to narrow or become less flexible.

Changes in blood flow through narrowed vessels near the head and neck can sometimes produce sounds that a person perceives in the ear.

Risk factors for atherosclerosis include:

• High cholesterol
• High blood pressure
• Diabetes
• Smoking
• Older age
• Family history of cardiovascular disease

Atherosclerosis is one of the cardiovascular conditions a healthcare provider may consider when investigating symptoms.

Anemia

Anemia means the blood does not carry oxygen as effectively as it should, commonly because there are too few healthy red blood cells or insufficient hemoglobin.

The heart may compensate by pumping blood faster, potentially making blood flow more noticeable.

Other symptoms of anemia may include:

• Fatigue
• Weakness
• Shortness of breath
• Dizziness
• Pale skin
• Rapid heartbeat

A complete blood count can help determine whether anemia is present.

Hyperthyroidism

An overactive thyroid speeds up many body processes and can increase heart rate and blood flow.

Possible symptoms include:

• Rapid heartbeat
• Unexplained weight loss
• Trembling
• Heat intolerance
• Increased sweating
• Anxiety
• Difficulty sleeping

Because thyroid disease is among the possible pulsatile tinnitus causes, blood testing may sometimes be appropriate.

Increased Blood Flow

Not every change in blood flow indicates disease. Certain circumstances naturally increase the amount of blood circulating through the body.

For example, pregnancy can significantly increase blood volume and cardiac output. Some people may consequently become more aware of vascular sounds.

Intense physical activity can also temporarily increase heart rate and blood flow, although persistent symptoms deserve evaluation.

Blood Vessel Conditions Associated With Pulsatile Tinnitus

Some pulsatile tinnitus causes involve structural abnormalities of arteries or veins.

These conditions are less common but are important reasons why persistent pulsatile tinnitus should not simply be ignored.

Carotid Artery Problems

The carotid arteries are major blood vessels that carry blood to the brain. They run through the neck relatively close to the structures of the ear.

Narrowing or other abnormalities affecting these arteries can alter blood flow and occasionally create a pulsing sound.

Arteriovenous Malformations

An arteriovenous malformation, or AVM, is an abnormal connection between arteries and veins.

Because blood flows differently through these abnormal connections, they can sometimes generate rhythmic sounds.

AVMs require specialist medical evaluation.

Dural Arteriovenous Fistula

A dural arteriovenous fistula is an abnormal connection between an artery and a vein within the covering surrounding the brain or spinal cord.

Although uncommon, it is an important vascular condition that physicians may investigate in people with certain patterns of pulsatile tinnitus.

Venous Abnormalities

Not all vascular causes involve arteries. Changes in blood flow through veins near the ear can also create pulsating sounds.

Imaging may be necessary to identify these abnormalities.

Can Increased Pressure Around the Brain Cause Pulsatile Tinnitus?

Yes. Idiopathic intracranial hypertension (IIH) is another condition associated with pulsatile tinnitus.

IIH occurs when pressure inside the skull becomes elevated without an obvious underlying cause.

Possible symptoms include:

• Headaches
• Pulsatile tinnitus
• Temporary changes in vision
• Double vision
• Blind spots
• Neck or shoulder discomfort

Vision changes are particularly important because untreated IIH can potentially damage the optic nerve.

Anyone experiencing pulsatile tinnitus together with new visual symptoms or significant headaches should seek medical evaluation.

Ear-Related Pulsatile Tinnitus Causes

Although blood flow is an important consideration, some conditions involving the middle ear can also produce rhythmic sounds.

Middle Ear Problems

Fluid behind the eardrum or abnormalities involving structures within the middle ear may make internal sounds more noticeable.

An ear examination can help identify these problems.

Certain Middle Ear Tumors

Rare vascular tumors around the middle ear may produce pulsatile tinnitus.

These tumors are uncommon, but their possibility is one reason persistent one-sided symptoms should be properly assessed rather than self-diagnosed.

Why Is Pulsatile Tinnitus More Noticeable at Night?

Many people say their symptoms seem louder once they get into bed.

This doesn't necessarily mean the underlying condition is getting worse at night.

Environmental sounds during the day can mask subtle internal noises. When your bedroom becomes quiet, your attention may naturally shift toward the pulsing sound.

Your sleeping position may also change how you perceive blood flow around your head and neck.

How Are Pulsatile Tinnitus Causes Diagnosed?

Because there are numerous potential explanations, diagnosis usually begins with a detailed medical evaluation.

Medical History

Your healthcare provider may ask:

• When the sound started
• Whether it affects one or both ears
• Whether it matches your heartbeat
• Whether it is constant or intermittent
• Whether you have headaches or dizziness
• Whether your vision has changed
• Which medications you take

Physical Examination

The examination may include checking:

• Ears
• Hearing
• Blood pressure
• Heart
• Neck
• Neurological function

A clinician may also listen around the ear and neck for abnormal blood-flow sounds.

Hearing Tests

An audiologist may perform hearing tests to determine whether hearing loss or another auditory problem is present.

Blood Tests

Depending on your symptoms, blood testing may check for:

• Anemia
• Thyroid abnormalities
• Other relevant medical conditions

Medical Imaging

Imaging is sometimes necessary when investigating vascular pulsatile tinnitus causes.

Depending on the circumstances, doctors may recommend tests such as:

• Ultrasound
• CT scan
• CT angiography
• MRI
• MR angiography

The appropriate test depends on the suspected cause and individual symptoms.

How Is Pulsatile Tinnitus Treated?

Treatment depends on what is producing the sound. There is no single treatment appropriate for every patient.

For example, treatment may involve:

• Managing high blood pressure
• Treating anemia
• Managing thyroid disease
• Treating an underlying ear disorder
• Addressing elevated intracranial pressure
• Treating certain blood vessel abnormalities

When a specific underlying condition is successfully treated, pulsatile tinnitus may improve or resolve.

Can Lifestyle Changes Help?

Lifestyle changes cannot correct every cause, particularly structural blood vessel abnormalities. However, supporting cardiovascular health remains beneficial.

Helpful habits may include:

• Maintaining healthy blood pressure
• Getting regular physical activity
• Avoiding smoking
• Getting adequate sleep
• Managing cholesterol and diabetes when present
• Following prescribed treatments consistently

Some people also find background sounds helpful when tinnitus interferes with sleep.

When Should You See a Doctor?

Arrange a medical evaluation if you develop new or persistent pulsatile tinnitus, particularly when the sound repeatedly follows your heartbeat.

Evaluation is especially important if:

• Only one ear is affected
• Symptoms are becoming stronger
• You develop hearing changes
• You experience frequent headaches
• You have dizziness or balance problems
• The sound interferes with sleep or daily activities

Because some pulsatile tinnitus causes are treatable, determining the underlying problem is more useful than simply trying to mask the sound.

When Is Pulsatile Tinnitus an Emergency?

Seek urgent medical attention when a new pulsating sound occurs together with concerning neurological or cardiovascular symptoms, such as:

• Sudden severe headache
• Sudden vision loss or major visual changes
• New weakness or numbness
• Difficulty speaking
• Fainting
• Severe dizziness
• Chest pain
• Significant difficulty breathing

Sudden symptoms should not be assumed to be ordinary tinnitus.

Conclusion

There are many possible pulsatile tinnitus causes, ranging from increased blood flow and anemia to high blood pressure, thyroid disease, intracranial pressure changes, and blood vessel abnormalities. Unlike ordinary ringing tinnitus, a sound that repeatedly matches your heartbeat deserves medical attention, especially when it is persistent or affects only one ear. Most importantly, pulsatile tinnitus is a symptom rather than a diagnosis. Identifying and treating its underlying cause can sometimes reduce or completely resolve the pulsing sound.

Frequently Asked Questions

What are the most common pulsatile tinnitus causes?

Possible causes include changes in blood flow, high blood pressure, anemia, thyroid disease, vascular abnormalities, and increased intracranial pressure. The cause varies between individuals.

Is pulsatile tinnitus usually serious?

Not always. Some causes are relatively harmless, but others involve blood vessels or increased pressure around the brain. Persistent symptoms should therefore be medically evaluated.

Why can I hear my heartbeat in my ear?

Blood flowing through vessels near the ear can sometimes produce sounds that become audible internally, particularly when blood flow is altered or turbulent.

Can high blood pressure cause pulsatile tinnitus?

High blood pressure may increase the force of blood flow and can contribute to pulsatile tinnitus in some people.

Can anemia cause pulsating sounds in the ear?

Yes. Anemia may increase cardiac output and blood flow, potentially making vascular sounds more noticeable.

Can anxiety cause pulsatile tinnitus?

Anxiety can make people more aware of internal sensations and sounds, but new pulse-synchronous tinnitus should not automatically be attributed to anxiety without considering other causes.

Why is pulsatile tinnitus louder when lying down?

A quiet environment makes internal sounds easier to notice, and changes in body position may influence how blood-flow sounds are perceived.

Should I see a doctor if my tinnitus matches my heartbeat?

Yes. New or persistent tinnitus that synchronizes with your heartbeat should be evaluated by a healthcare professional to determine the underlying cause.