New pulsatile tinnitus with neck pain, a new headache, a drooping eyelid or any neurological symptom can signal a torn neck artery, a carotid or vertebral dissection, and needs emergency care the same day.
Pulsatile tinnitus is a whooshing or thumping sound that keeps time with the heartbeat. Usually it calls for an appointment within weeks, as pulsatile tinnitus explains. This page covers the combination of signs that makes it an emergency.
If this is happening now
Get emergency help, through your local emergency number or an emergency department, if new pulsatile tinnitus comes with any of these:
- neck pain, or a new or unusual headache or pain in the face
- a drooping eyelid or a smaller pupil on one side, the pair of signs called Horner syndrome
- face drooping, weakness or numbness on one side, slurred or confused speech, or loss of sight, the classic signs of a stroke
- sudden dizziness or unsteadiness alongside neck pain or headache
The NHS adds two instructions for suspected stroke that apply here: if the symptoms fade after a short time, get help straight away anyway, and do not drive yourself to hospital.
When you are seen, say when the pulsing sound started, which side it is on and what came with it. Mention any recent strain or minor injury to the neck: most dissections happen spontaneously or after minor trauma.
What a cervical artery dissection is
A dissection starts with a tear in the inner lining of an artery. Blood seeps into the wall and collects there as a bruise-like clot called an intramural haematoma, which can narrow the channel, block it, or shed clots towards the brain. It can affect the carotid arteries or the vertebral arteries, the two pairs that carry blood up through the neck to the brain.
It is uncommon. A population study in Olmsted County, Minnesota, counted 4.69 spontaneous dissections per 100,000 adults per year across 2002 to 2020, leaving out those after major trauma, at an average age of 50.2. The rate climbed from 2.30 in 2002–2006 to 8.93 in 2017–2020, which the authors say likely reflects the growing use of non-invasive scans that detect it.
The American Heart Association calls it an important cause of stroke, particularly in young adults, and the Minnesota paper notes it accounts for up to 15% to 25% of ischaemic strokes in people under 50. Stroke and tinnitus covers the wider relationship between the two.
How often dissection causes pulsatile tinnitus
It is a minority symptom, and the figure depends on who is counted:
- 16–27% in spontaneous carotid dissection, according to a 2005 review of carotid dissection.
- 16 of 136 people in a Finnish series of consecutive patients with a dissection in any neck or head artery.
- 63 of 778 (8.1%) in CADISP, a European study that assessed pulsatile tinnitus systematically with a standard questionnaire.
Part of the spread is which arteries are counted. In CADISP, 85.7% of the people who had pulsatile tinnitus had a carotid dissection, against 64.2% of those who did not. It is mostly a carotid symptom, which may help explain why studies that include vertebral dissections report it less often.
In the Finnish series, on admission ten had subjective tinnitus, heard only by them, and five had objective tinnitus, audible to the examiner as well; in one more, subjective tinnitus appeared three months later.
It rarely arrives alone. In that series, 13 of the 16 also had headache or neck pain, and pulsatile tinnitus was the only presenting symptom in one person. That presentation is rare but real: a separate 2025 case report describes a 50-year-old man whose only complaint, apart from a mild heavy-headed feeling, was one-sided pulsatile tinnitus that had started the day before. MR angiography found dissections in both internal carotid arteries.
The signs that come with it
The 2005 review lists the local signs of carotid dissection, those on the same side as the tear:
- head, face or neck pain in 64–74%, and the first symptom in up to 58.5%
- headache in 65–68%, face pain in 34–53% and neck pain in 9–26%
- Horner syndrome, mainly a small pupil and a drooping eyelid, in 28–41%
- palsy of a cranial nerve in 8–16%, most often the nerve that moves the tongue
About three quarters of carotid dissections cause ischaemic events, meaning a stroke or a transient ischaemic attack in the brain or the eye.
Vertebral dissections present differently. A systematic review of 75 studies and 1,972 patients found the commonest symptoms were dizziness or vertigo (58%), headache (51%) and neck pain (46%), and that 63% had a stroke. The review argues that dissection should be considered in anyone arriving with dizziness or head and neck pain.
Why the first days matter
A series of 80 consecutive patients with carotid dissection recorded when each symptom began. Forty-two had a stroke in the brain or eye. In nine, the stroke was the first symptom. In the other 33, the gap between the first symptoms and the stroke ranged from a few minutes to 31 days, and it was seven days or less in 82%.
Local signs such as pain, Horner syndrome or pulsatile tinnitus can come before a stroke, and the authors conclude that preventive treatment should start as early as possible after the first symptoms.
Having the tinnitus does not make a dissection safe. CADISP found that people with pulsatile tinnitus had a milder course: fewer arrived with an ischaemic stroke (41.3%, against 63.9% of those without it), and more made an excellent recovery by three months (92.1% against 75.4%). But 41.3% is still two people in every five. The urgency comes from the dissection itself, not from the tinnitus signalling a worse one. The 2005 review, by contrast, found pulsatile tinnitus as frequent in dissections that caused ischaemia as in those that did not, so the tinnitus is not a reliable sign that a dissection is the milder kind.
How it is diagnosed
With imaging of the arteries, done urgently. A 2022 review in Mayo Clinic Proceedings says the diagnosis requires emergency evaluation with CT angiography or MRI and MR angiography of the head and neck. It does not recommend carotid ultrasound as the first test, because ultrasound cannot see enough of the arteries, and it reserves catheter angiography, a dye test through a thin tube, for unusual cases or, in the acute phase, for people with severe neurological deficits.
It is not an easy diagnosis. The American Heart Association's 2024 statement calls it challenging both clinically and on imaging, and a randomised trial shows how much: in CADISS, central review of the scans could not confirm dissection in 52 of 250 patients enrolled with the diagnosis. The investigators suggested that the imaging criteria are not always applied correctly in routine practice.
A suspected dissection sits outside the usual tinnitus assessment and the question of whether tinnitus needs a scan: this is a scan that should not wait.
How it is treated, in outline
Treatment is decided by a stroke or neurology team; this is the outline, not a plan for any individual.
If a stroke is under way, dissection does not change the emergency treatment. The European Stroke Organisation's 2021 guideline recommends clot-dissolving treatment (intravenous thrombolysis) within 4.5 hours of onset where the standard criteria are met, and mechanical clot removal for a large blocked artery in the front of the brain.
To prevent a stroke, patients take either an antiplatelet drug such as aspirin or an anticoagulant. Three pieces of evidence frame the choice:
- CADISS randomised 250 patients, 118 with carotid and 132 with vertebral dissection, and found no difference between the two approaches. Recurrent stroke was uncommon, 2.4% at one year.
- TREAT-CAD compared aspirin with a vitamin K antagonist such as warfarin in 194 patients. In the 173 who followed the trial protocol (the per-protocol analysis), the combined outcome occurred in 23% on aspirin and 15% on the anticoagulant, so aspirin could not be shown to be as good. Seven people on aspirin had an ischaemic stroke, against none on the anticoagulant; one on the anticoagulant had a major bleed.
- A 2024 individual patient data meta-analysis pooled both trials, 444 patients in all. The combined outcome occurred in 1.4% on anticoagulation and 4.4% on antiplatelets, a difference that did not reach statistical significance. Anticoagulation was associated with fewer strokes, a secondary outcome where the difference was statistically significant, and with slightly more bleeding, two events against none.
The European guideline recommends that clinicians can prescribe either option. The American Heart Association suggests individualising the choice and continuing treatment for at least 3 to 6 months, and notes that the risk of a second dissection is low.
What happens to the tinnitus
This is the thinnest part of the evidence: the studies read for this article report how arteries and patients fared, not how long the tinnitus lasted. What there is looks hopeful. In the 2025 case report, the tinnitus began to ease on the ninth day and had gone by around day 40, as follow-up imaging showed the artery improving. In the Finnish series, most of the narrowings seen on angiography returned to normal during follow-up.
The artery does not always heal quickly, though. In CADISS, 56 of 92 patients on antiplatelets and 53 of 89 on anticoagulants still had some narrowing or blockage at three months. Tinnitus that persists after a dissection is worth raising at follow-up.
Conditions that raise the odds
A 2026 systematic review of risk factors found evidence for migraine, connective tissue disorders, recent infection, minor trauma, and cardiovascular factors such as high blood pressure. It rated its certainty as moderate only for migraine and one genetic variant, low for minor trauma, and very low for everything else. Migraine's wider links with tinnitus are in migraine and tinnitus.
Two other conditions connect dissection and pulsatile tinnitus directly:
- Fibromuscular dysplasia. In the first 447 patients in the US registry, pulsatile tinnitus was among the commonest presenting symptoms, along with high blood pressure and headache, and 19.7% had had an arterial dissection.
- Eagle syndrome. An overlong styloid bone can press on the carotid artery. A 2024 review of the vascular form found internal carotid artery dissection its second most frequent vascular complication. Eagle syndrome covers the head-turning pattern that points to it.
Neck manipulation and dissection
A systematic review and meta-analysis of chiropractic care and cervical artery dissection found a small association, an odds ratio of 1.74 (95% confidence interval 1.26 to 2.41), and rated the quality of that body of evidence, by GRADE criteria, as very low. Its authors titled the paper "No Evidence for Causation" and proposed that bias and confounding in the underlying studies may explain the association.
The confound they point to is a real one: a dissection already in progress causes neck pain, and neck pain is what sends people to a chiropractor. An association would then appear whether or not the manipulation did anything.
That is not the same as "it is safe". Very low quality evidence supports neither a confident yes nor a confident no, and the review itself notes that case reports and case-control studies have suggested an association. For people who have already had a dissection, the 2022 Mayo Clinic Proceedings review advises avoiding deep neck massage and chiropractic manipulation involving sudden, forceful neck movements. Chiropractic care and tinnitus covers the wider question.
The practical point follows from that confound: new neck pain arriving with new pulsatile tinnitus, a new headache or a drooping eyelid calls for emergency assessment, not a manipulation appointment.
Keeping it in proportion
Even the overall rate for 2017–2020 in the Minnesota study, 8.93 per 100,000 adults a year, is fewer than one person in 10,000 a year, and pulsatile tinnitus has many other causes. Without the signs in the first section, it still deserves a doctor's assessment within weeks; with any of them, do not wait. The when to see a doctor checklist covers other combinations that call for prompt care.