What the migraine with aura and stroke link means, honestly, and what to record for your neurologist

You have read that migraine with aura is linked to higher stroke risk and you want to know what that means. The link is real in studies, but the overall risk is low, and the numbers describe groups, not you. Your doctor weighs your personal factors. A dated migraine diary in Sam helps you prepare. Sleep and heart rate from Apple Health sit in the same app. A doctor report can be exported as a PDF for the appointment.

This text is general information and does not replace a doctor. It recommends no medicine and no contraception.

Does migraine with aura raise stroke risk?

The Stroke Association says that with migraine with aura you are about twice as likely to have an ischaemic stroke in your lifetime as someone without migraine. It adds that the overall risk is still very low, and that migraine has not been shown to cause stroke.

A 2009 meta-analysis in the BMJ looked across many studies. For people with migraine with aura, the relative risk of ischaemic stroke was 2.16, with a 95% confidence interval of 1.53 to 3.03, about double. A relative risk of 2 means the event happens twice as often in that group as in the comparison group. It says nothing about how many people are affected at all.

What does a doubled relative risk mean in practice?

A doubled risk sounds large, but the size depends on the baseline. The Stroke Association is clear that the overall risk linked to migraine is very low, and that other factors such as smoking and high blood pressure matter far more.

Only one absolute figure is available for migraine with aura. In the US Women's Health Study, 27,840 women aged 45 and over were followed for about ten years. After adjusting for age, researchers attributed roughly 18 extra major cardiovascular events per 10,000 women per year to migraine with aura. That is a combined end point covering ischaemic stroke, heart attack and death from vascular causes. It applies to women aged 45 and over, not to everyone. For ages 30 to 45, no comparable number is established. That is the honest gap, and it is why your personal risk is a question for your doctor.

Does migraine without aura matter?

In the same BMJ meta-analysis, migraine without aura showed no clear rise in ischaemic stroke risk. The relative risk was 1.23, with a confidence interval of 0.90 to 1.69. That range includes 1, so it means no difference. The Stroke Association says the risk with migraine without aura is uncertain but likely even lower than the already small risk with aura.

What changes the risk, and who decides?

The meta-analysis found that the ischaemic stroke risk with migraine rose for women compared with men. It also rose for people under 45, for smokers and for women using the combined pill. Classic vascular risk factors matter too. The Stroke Association lists high blood pressure, diabetes, atrial fibrillation and high cholesterol, plus smoking and excess weight.

Which of these apply to you is for your doctor to weigh. On the combined pill, the Stroke Association says it raises stroke risk in women with migraine with aura, so it is not usually given. Whether contraception fits you is a conversation with your doctor and your neurologist. See migraine triggers, sleep and stress tracking for how the everyday side fits into a record.

Aura or stroke: when do you call for help?

An aura usually builds up slowly, lasts minutes and up to about an hour, and goes away completely. The Stroke Association says urgent stroke signs come on suddenly. Use F.A.S.T.: Face, Arms, Speech, Time to call. Call your local emergency number (112 in the EU, 999 in the UK, 911 in the US) for sudden weakness on one side, trouble speaking, sudden blurred vision or loss of sight, sudden dizziness or unsteadiness, or a sudden severe headache.

Do not wait to see whether it passes. If you are unsure whether what you feel is an aura or something more, the call is the right move. No diary or app takes that decision for you.

What do you note during each aura?

A dated record turns worry into a conversation. The Stroke Association and the NHS both point to a symptom diary as helpful. For each aura note the date and start time, how long it lasted in minutes, the kind of aura such as vision, tingling, speech, dizziness or weakness, which side it was on, whether it fully went away and when, whether a headache followed, and whether it felt different from usual. Add the context your doctor may want: smoking, contraception, blood pressure, and any family history of vascular disease or blood clots.

If an aura is new, different or clearly longer, call your neurologist's office and ask how soon you should come instead of waiting for a routine visit. If it is happening now or starts suddenly, call the emergency number. You can keep the aura details in the note field of the migraine program and use the symptom diary for the days in between. See migraine symptoms, aura and phases for how each phase shows up.

What should you ask your neurologist?

• Which vascular risk factors apply to me, such as blood pressure, cholesterol or smoking?
• How does my contraception fit with migraine with aura?
• Are my auras disruptive enough that prevention is worth discussing?
• How do I know when to call for help rather than wait?

Disruptive auras are one reason doctors consider prevention. Whether it fits you is your neurologist's call. If you are newly diagnosed, migraine diagnosis: what now helps with the first weeks. A doctor visit checklist for a chronic condition keeps the appointment on track.

Keep every aura in Sam and take the record to your neurologist

You arrive with a dated record instead of a patchy memory. In the migraine program, a diary with a monthly questionnaire and a doctor report, you keep the timeline your neurologist can actually use.

• Instead of paper: an entry made today can bring last night's sleep and heart rate variability from Apple Health when a value exists, so context sits next to your note.
• Instead of memory at the appointment: the doctor report as a PDF covers the period you choose, from one month to the whole record.
• Instead of screenshots: each entry records aura, strength and duration; print the report or show it on your phone. Notes are not printed.

Sam records and does not diagnose. Only your neurologist can say what an aura means for you, and a possible stroke is always the emergency number.

Try Sam Health

Sam is a wellness companion, not a medical device. The app does not diagnose, treat, cure or prevent any condition or health state. Always consult qualified professionals for medical decisions.

Related reading

• Migraine symptoms, aura and phases
• Migraine diagnosis: what now
• Doctor visit checklist for a chronic condition

Sources

Updated: October 2026

• Stroke Association: Migraine and stroke and Stroke signs and symptoms (FAST)
• Schürks M et al.: Migraine and cardiovascular disease: systematic review and meta-analysis, BMJ 2009
• Kurth T et al.: Migraine and risk of cardiovascular disease in women, JAMA 2006
• NHS: Migraine
• The Migraine Trust: Migraine and stroke