Migraine aura vs stroke: how to tell the difference

Migraine aura vs stroke: how to tell the difference

Migraine aura and stroke can both cause sudden vision changes, numbness, or trouble speaking. That overlap is real, and it makes sense to take it seriously. There are patterns that can help set them apart — and knowing them can help you act fast when it matters.

Key takeaways

• Migraine aura symptoms usually build slowly over at least 5 minutes, then go away within an hour.
• Stroke and TIA (transient ischemic attack, or "mini-stroke") symptoms tend to hit all at once, without warning.
• Any new neurological symptom — even one that looks like aura — deserves prompt medical attention if it is your first time or if the pattern feels different.
• People with migraine, especially migraine with aura, have a modestly higher risk of ischemic stroke. Knowing both conditions matters.
• When in doubt, call 911. It is always better to be evaluated and sent home than to miss a stroke.

What is migraine aura?

Migraine aura is a set of temporary neurological symptoms that affects about one in three people with migraine.¹ It usually comes just before or during the headache phase of a migraine attack. Some people get aura with no headache at all.

The most common type is visual aura — flickering zigzag lines, blind spots, or shimmering shapes that grow or move across your field of vision. Sensory aura (tingling or numbness that travels up an arm or across the face) and speech aura (trouble finding words) are less common but well recognized.²

The cause is a brain event called cortical spreading depolarization — a slow, self-limiting wave of electrical activity that moves across the brain surface.³ This wave does not damage brain tissue. It is temporary and reverses on its own.

What is a TIA?

A transient ischemic attack (TIA) is sometimes called a "mini-stroke." It happens when blood flow to part of the brain is briefly blocked. A TIA clears up within 24 hours — usually within minutes — while a stroke causes lasting damage.

Both TIA and strokes cause sudden neurological symptoms: weakness, vision changes, numbness, trouble speaking, or loss of balance. A TIA is a serious warning sign. The risk of a stroke after having a TIA can be as high as 10 to 18 percent without treatment.⁴

Why are they so easy to confuse?

Migraine aura is one of the most common "stroke mimics" seen in emergency departments.⁵ Clinicians see it regularly in people who come in worried about a stroke — and that worry is completely understandable.

The confusion can go both ways. Aura can look enough like a TIA that people receive unnecessary treatments. At the same time, a real TIA can occasionally show gradual or spreading symptoms that look like aura. No one should dismiss a new neurological event as "just aura."

A 2024 study in the Journal of Neurology looked at explicit diagnostic criteria for separating TIA from migraine aura.⁶ Even the best clinical scoring tools missed about 1 in 10 TIA cases that had migraine-like features. Proper clinical evaluation is essential when symptoms are ambiguous.

Does migraine with aura increase stroke risk?

Yes — modestly. People with migraine with aura have a somewhat higher risk of ischemic stroke compared to people without migraine.⁷

A large 2026 study in Neurology followed more than 130,000 postmenopausal women for nearly 20 years.⁸ A history of migraine was linked to a 12% higher relative risk of ischemic stroke over the study period, even after accounting for other cardiovascular risk factors.

That relative increase sounds worrying, but keep it in context. The absolute risk stays low for most people. The connection is strongest when migraine with aura combines with other stroke risk factors — especially smoking and use of combined oral contraceptives (estrogen-containing birth control) in women under 35.⁹

If you have migraine with aura, it is worthwhile to discuss this with your clinician. Together, you can review and manage your overall cardiovascular risk.

When should you call 911?

Use the FAST acronym as a starting point:

• F — Face drooping
• A — Arm weakness
• S — Speech difficulty
• T — Time to call 911

Stroke can also show up as sudden vision loss, sudden severe dizziness, or the worst headache of your life.¹⁰

Call 911 right away if you have:

• Sudden weakness or numbness on one side of your face, arm, or leg
• Sudden confusion, trouble speaking, or trouble understanding speech
• Sudden loss of vision in one or both eyes
• Sudden severe dizziness, loss of balance, or trouble walking
• A sudden headache that is the worst of your life — unlike any headache before
• Any neurological symptom that is new to you, even if it resolves quickly

Do not wait to see if it goes away. A TIA that clears up is still a medical emergency. It is a warning that a larger stroke may follow soon.

When is it more likely to be aura?

Aura is more likely when you:

• Have had similar episodes many times before with the same pattern
• Notice symptoms that build slowly over several minutes, not all at once
• See classic visual aura — zigzags, a growing blind spot with a flickering edge
• Feel tingling that travels gradually from fingers to wrist to arm to face
• Have the symptoms followed by your typical migraine attack

Even so, a change in your usual aura pattern deserves attention. Aura that lasts longer than 60 minutes, aura on both sides, or a new type of symptom are all reasons to contact your clinician — or go to the emergency room if symptoms are severe.

Should you see a headache specialist if you have aura?

Yes. A specialist who understands migraine is the right person to review your history, confirm the diagnosis, talk through your stroke risk profile, and make sure you are on the right treatment plan.

For people with migraine with aura, some acute treatments — particularly triptans, ergotamines, and estrogen-containing contraceptives — may carry additional considerations depending on your overall risk. A specialist can walk through those with you without adding unnecessary alarm.

At Haven Headache & Migraine Center, we see patients virtually across California. We take your symptoms seriously, and we will take the time to get it right.

Frequently asked questions

Can migraine aura happen without a headache?
Yes. Aura without headache — sometimes called a "silent migraine" or acephalgic migraine — is recognized by the International Classification of Headache Disorders (ICHD-3).² It is more common in older adults. Because there is no headache to give context, it can be especially hard to tell apart from a TIA. If you are over 50 and have a new episode of vision changes, numbness, or speech difficulty without headache, treat it as an emergency until proven otherwise.

How long does migraine aura last?
Most aura symptoms last between 5 and 60 minutes. By definition, a single aura symptom should resolve within 60 minutes.² Research on aura changes with age found that aura lasting over 60 minutes is more common in younger patients. It becomes less frequent with age.¹¹ This means that in older adults, prolonged or unusual neurological symptoms are less likely to fit a typical aura pattern and more likely to warrant urgent evaluation. Prolonged aura is a reason to check in with your clinician.

Can a migraine attack cause a stroke?
A rare condition called migrainous infarction can occur when aura symptoms last longer than 60 minutes and imaging shows a stroke in the same area.¹² This is uncommon. The more typical connection is that migraine with aura is a modest risk factor for ischemic stroke — not that aura directly causes strokes.

What is the FAST test for stroke?
FAST stands for: Face drooping, Arm weakness, Speech difficulty, Time to call 911. It is a quick check, but not all strokes show every sign. Sudden vision loss, severe dizziness, or the worst headache of your life also warrant emergency care.

Does migraine aura show up on an MRI?
In most cases, a brain MRI during a migraine aura will be normal or show only minor changes. This is one reason aura and TIA can be hard to separate — both may have a normal initial MRI.

My aura changed — what should I do?
A change in your usual aura pattern is worth taking seriously. New symptoms, sudden loss of function, aura that lasts longer than an hour, or aura that occurs without your typical migraine attack should all prompt a call to your clinician. A change in a long-standing neurological symptom is a reason to be evaluated.

You deserve an accurate diagnosis

If your aura worries you — or if you have never had a proper evaluation to confirm that what you experience is truly aura — a headache specialist can help. The goal is not to add fear to something already stressful. It is to give you real information and a clear plan.

At Haven, we offer appointments virtually across California, so you can get answers without waiting months for an in-person slot. Book a consultation to get started.

Medically reviewed by: Samantha Clem, PA-C, AQH, Haven Headache & Migraine Center

Peer reviewed by: Karly Kozlowski PA-C, Haven Headache & Migraine Center

References

1. Joppeková Ľ, et al. What does a migraine aura look like? A systematic review. J Headache Pain. 2025;26(1):149. https://doi.org/10.1186/s10194-025-02080-6
2. International Headache Society. ICHD-3: Migraine with aura. https://ichd-3.org/1-migraine/1-2-migraine-with-aura/
3. Kitamura E, Imai N. Molecular and cellular neurobiology of spreading depolarization/depression and migraine: a narrative review. Int J Mol Sci. 2024;25(20):11163. https://doi.org/10.3390/ijms252011163
4. Amin HP, et al. Diagnosis, workup, risk reduction of transient ischemic attack in the emergency department setting: a scientific statement from the American Heart Association. Stroke. 2023;54(3):e109–e121. https://doi.org/10.1161/STR.0000000000000418
5. Alstadhaug KB, Tronvik E, Aamodt AH. Transient ischemic attack or migraine with aura? Tidsskr Nor Laegeforen. 2023;143(15). https://doi.org/10.4045/tidsskr.23.0225
6. Scutelnic A, et al. Field-testing the explicit diagnostic criteria for transient ischemic attack: a diagnostic accuracy study. J Neurol. 2024;272(1):79. https://doi.org/10.1007/s00415-024-12733-2
7. Adnyana IMO, et al. Migraine as a risk factor for ischemic stroke: a systematic review and meta-analysis of cohort studies. Egypt J Neurol Psychiatry Neurosurg. 2022;58:125. https://doi.org/10.1186/s41983-022-00562-x
8. Madsen TE, Raker CA, Pavlovic JM, et al. Migraine and stroke risk in postmenopausal women in the Women's Health Initiative. Neurology. 2026;107(1):e214825. https://doi.org/10.1212/WNL.0000000000214825
9. Carlton C, et al. Oral contraceptives and ischemic stroke risk. Stroke. 2018;49(4):e157–e159. https://doi.org/10.1161/strokeaha.117.020084
10. Goldstein LB, et al. Primary prevention of ischemic stroke: a guideline from the American Heart Association/American Stroke Association. Stroke. 2006;37(6):1583–1633. https://doi.org/10.1161/01.STR.0000223048.70103.F1
11. Scutelnic A, Drangova H, Klein A, et al. Changes of migraine aura with advancing age of patients. J Headache Pain. 2023;24(1):100. https://doi.org/10.1186/s10194-023-01642-w
12. International Headache Society. ICHD-3: Migrainous infarction (1.4.3). https://ichd-3.org/1-migraine/1-4-retinal-migraine/1-4-3-migrainous-infarction/

This article is for general education and is not medical advice. It is not a substitute for care from a qualified health professional. Always talk with your clinician before starting, stopping, or changing any treatment. If you have a sudden, severe headache, the worst headache of your life, or a headache with new symptoms like weakness, trouble speaking, or vision loss, seek emergency care right away.