If you hear a whoosh, thump, or hum that keeps time with your heartbeat, it may be pulsatile tinnitus. Unlike many forms of tinnitus, this pulse-synchronous sound can sometimes point to a change in blood flow or another physical cause. The sound itself does not reveal what that cause is, but it is a good reason to arrange a clinical assessment rather than trying to diagnose it by description alone.
A closer look at pulsatile tinnitus
Non-pulsatile tinnitus is often described as ringing or buzzing that does not match the heartbeat. Pulsatile tinnitus is rhythmic and synchronized with your pulse. A repeated clicking or fluttering sound may feel rhythmic without actually matching your pulse; clinicians distinguish these patterns because they can have different explanations.
A heartbeat in the ear is often noticed on one side, but it can occur on both. Neither the side nor the sound quality identifies the cause. A high- or low-pitched sound may help a clinician shape their questions, but it cannot confirm whether the source is arterial, venous, or something else.
Why the sound needs assessment
Possible causes range from blood-vessel changes and differences in nearby bone or ear structures to a growth such as a paraganglioma. Some people have a systemic contributor, such as anemia or increased blood flow; raised pressure around the brain is another possibility. Some causes need treatment, while others may be harmless variations. This range is why a whooshing sound in the ear cannot be safely interpreted on its own.
A 2017 radiology review by Sjoert A. H. Pegge and colleagues described a cause being identified in about 70% of cases after appropriate diagnostic work-up. That figure comes from the studies discussed in the review; it is not a prediction for any one person. It does underline why clinicians take the symptom seriously without assuming the cause is dangerous.
What a clinician may check
Your clinician will ask when the sound started, whether it is constant or intermittent, which ear is affected, and whether it changes with position or activity. They may ask about headaches, dizziness, hearing changes, or other neurological symptoms. The examination can include looking in the ear, listening around the head and neck for a bruit (an unusual blood-flow sound), and checking hearing. These findings guide the next step, but history and examination alone may not settle the cause.
Depending on your symptoms and examination, your first point of contact may be a primary-care clinician or a doctor specializing in ear, nose, and throat conditions (an ENT specialist). They can coordinate imaging or refer you to another specialist if the findings suggest a vascular, neurological, or other cause.
How imaging is chosen
MRI and magnetic resonance angiography (MRA) can assess soft tissues and blood vessels without using ionizing radiation. CT, CT angiography, or a focused scan of the temporal bone can be useful when the clinician needs a closer look at bone, the middle ear, or particular blood-vessel features. The best test depends on the suspected cause, your examination, and practical factors such as whether contrast can be used.
There is no universally agreed first scan for every patient. A 2025 imaging review by Madhavi V. Duvvuri, Haider Ali, and Matthew R. Amans noted that direct comparisons have not established one best screening scan. The authors favored MRI/MRA as an initial approach, while other clinical pathways use CT-based imaging for particular concerns. These approaches are not necessarily contradictory: MRI and CT provide different information, and clinicians tailor the protocol to the question they need to answer. Catheter angiography, an invasive test, is generally reserved for selected situations rather than used as the first screening test.
When to seek urgent care
Seek emergency care if the sound occurs with new weakness, numbness, facial drooping, trouble speaking, or a sudden severe headache. These symptoms need urgent assessment in their own right. A sudden drop in hearing also needs prompt evaluation; learn why sudden hearing loss in one ear needs fast assessment.
If the sound is new, persistent, or recurring but you have no emergency symptoms, arrange a timely appointment rather than waiting for it to disappear. Before you go, note when it began, whether it matches your pulse, which ear is involved, and any accompanying symptoms. That information can help your clinician choose the right assessment and decide whether imaging is needed.
