Migraine with aura: what the aura is, how long it lasts and when to worry

Short answer

A migraine aura is a set of temporary, fully reversible nervous-system symptoms — most often zigzag lines, flashing lights or a growing blind spot, sometimes tingling, numbness or trouble finding words — that usually build up over at least 5 minutes, last 5 to 60 minutes each and are often followed by a headache (1). About a third of people with migraine have aura; in a 2024 study of 227 adults with migraine with aura, 94.7% had visual aura, 35.7% had sensory symptoms and 13.7% had speech or language symptoms (2).

The aura is thought to come from a slow wave of electrical activity spreading across the brain's surface, called cortical spreading depression (3). If your words suddenly scramble or your hand goes numb before a migraine, you are not imagining it and it is not weakness: it is a recognized brain event — and the first time, or any time it feels different, it deserves a medical check.

Note: This article explains research. It is not medical advice and it does not diagnose migraine. Weakness on one side of the body or face, sudden vision loss, trouble speaking that does not pass, confusion, a seizure or a sudden, extremely painful headache needs emergency care — call 911 (4). This guide is published by Welltory, which makes one of the apps mentioned.

If you live with migraine and want to work through this with other women who get it, Welltory runs a paid peer-support program: join Migraine Lab here (what Migraine Lab is, who it is for and what it costs). It is education and peer support, not medical care.

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What is a migraine aura?

Doctors divide migraine into two main types: migraine without aura and migraine with aura. Many people have both kinds of attacks at different times, and the classification codes both (1). For a general picture of how migraine works, see migraine explained.

The International Classification of Headache Disorders (ICHD-3) describes migraine with aura as recurrent attacks, lasting minutes, of one-sided, fully reversible visual, sensory or other central nervous system symptoms that usually develop gradually and are usually followed by headache (1). To make the diagnosis, a doctor looks for at least two attacks with one or more reversible aura symptoms and at least three of these six features (1):

1. At least one aura symptom spreads gradually over 5 minutes or more.

2. Two or more aura symptoms happen one after another.

3. Each aura symptom lasts 5 to 60 minutes.

4. At least one aura symptom is on one side.

5. At least one aura symptom is "positive" — something added, like sparkles or pins and needles.

6. A headache comes with the aura or within 60 minutes after it.

The words "fully reversible" are central. An aura comes and goes completely. Symptoms that stay, or that appear suddenly at full strength, point away from aura and toward other causes.

Aura is not the same as prodrome

Many people feel "off" for hours before an attack — tired, yawning, craving food, stiff-necked. That is the prodrome, and the classification notes it can begin hours to a day or two before the aura (1). The aura is shorter and more specific: it is a clear neurological symptom that lasts minutes. Our guide on migraine prodrome vs trigger explains the early phase.

Migraine aura symptoms: the four main types

Visual aura — by far the most common

Visual aura happens in more than 90% of people with migraine with aura, at least in some attacks (1). The NHS describes "seeing zigzag lines or flashing lights" (4). Typical forms:

• A shimmering, C-shaped arc of zigzag lines that starts near the center of your vision and slowly expands toward the edge. Its edges may sparkle or shift like a kaleidoscope.

• A blind spot (scotoma) that grows; you may notice it as missing letters when reading or missing parts of faces.

• Flickering or heat-haze distortion over one half of your field of vision.

• Tunnel vision or patchy vision for part of the aura.

A visual aura comes from the brain, so it affects the same side of the visual field in both eyes (5). Many people call this an "ocular migraine," though that term also covers a much rarer one-eye condition (retinal migraine) that needs urgent checks (5).

Sensory aura

Tingling or "pins and needles," sometimes followed by numbness, that creeps slowly — often from the fingers up the arm and into one side of the face, lips or tongue. The NHS lists "numbness or a tingling that feels like pins and needles" among aura symptoms (4). In REFORM, 35.7% of people with aura had sensory symptoms (2).

Speech and language aura

Trouble finding words, mixing words up or understanding others, lasting minutes. The NHS lists "difficulty speaking" (4). In REFORM, 13.7% had speech or language aura (2). This one is especially frightening because it looks like a stroke — and the first time, it should be treated as one until a doctor says otherwise.

Rarer types: motor and brainstem aura

• Hemiplegic migraine is migraine with aura that includes fully reversible motor weakness in addition to visual, sensory or speech symptoms (6). Motor symptoms generally last less than 72 hours but can persist for weeks in some people (6). Weakness on one side always needs emergency assessment.

• Migraine with brainstem aura involves symptoms such as slurred speech, vertigo, ringing in the ears, reduced hearing, double vision, clumsiness not explained by numbness, or reduced consciousness — without motor weakness (7).

The order symptoms come in

Aura symptoms usually follow one another, most often visual first, then sensory, then language, although other orders happen (1). A common story: zigzags for 20 minutes, then tingling in the hand as the zigzags fade, then a few minutes of fumbling for words, then the headache.

What does a migraine aura look like?

People search for "migraine aura images" because it is hard to describe. Since this page has no pictures, here are ways people describe it, which you can use when talking to your doctor:

• "Like looking through a heat haze over a road."

• "A bright, jagged C that grows and drifts to the side."

• "Like the edge of broken glass, glittering."

• "A smudge where the middle of your face should be."

• "A hole in my vision that I could not read through."

A useful trick: when it is safe, draw it on paper as soon as it starts and again 10 and 20 minutes later. The changing drawing shows the slow spread that is typical of aura, and doctors find it far more useful than a photo of a stranger's aura online.

Work out your early warning signs with women who get it

Welltory Migraine Lab is a paid, moderated online community for women 18 to 65 living with migraine. Opens December 1, 2026. Peer support and education, not medical care.

See Migraine Lab

What causes migraine aura?

The leading explanation is cortical spreading depression: a wave of intense nerve-cell activity followed by a period of quiet that rolls slowly across the surface of the brain. The ICHD-3 links aura to a wave of reduced blood flow moving across the cortex and attributes it to this spreading depression (1).

A landmark 2001 study in PNAS captured it in real time. Researchers scanned people with high-field functional MRI while they had visual aura. The signal changes crept across the visual cortex at about 3.5 mm per minute, matching the speed of the zigzags moving across their vision, and showed at least eight features that resemble cortical spreading depression; the authors concluded that an event like it "generates the aura in human visual cortex" (3). That slow speed is why aura spreads over minutes rather than appearing all at once.

Why some brains are prone to this wave is not fully understood. Genetics play a large part in migraine overall, and things that change the brain's balance — poor sleep, stress, hormonal shifts, skipped meals, bright light, alcohol — can act as triggers. Our guide on migraine and HRV covers how stress and recovery fit into the bigger picture.

How long does a migraine aura last?

• Each aura symptom: 5 to 60 minutes (1). Mayo Clinic says a typical aura "usually lasts for about five minutes to an hour" (5). When several symptoms follow each other, the whole aura can last longer, since each one is counted separately (1).

• In real life: in REFORM, 78.0% of people had each aura symptom lasting 5 to 60 minutes, and visual aura lasted under 60 minutes in 89.8% (2).

• The headache: in 80.8% of people whose aura came with headache, the headache started after the aura began; in only 5.0% did the aura start after the headache (2).

• The aftermath: postdrome symptoms such as fatigue and fog can last up to 48 hours (1). If you are deciding about the next day, see should I go to work the day after a migraine.

Time limits that matter: the NHS says aura symptoms should not last longer than 1 hour and that an aura lasting longer needs urgent advice (4). Mayo Clinic adds that visual changes lasting less than 5 minutes or more than 60 minutes need prompt evaluation (5). An aura that persists for a week or more is a recognized complication called persistent aura without infarction, diagnosed only after brain imaging shows no stroke (8).

Migraine aura without headache

Aura can come on its own. Doctors call it typical aura without headache, and some people only ever have this form (9). In REFORM, 33.9% of adults with migraine with aura had at least some aura episodes without headache (2).

Is aura without migraine dangerous?

In itself, a typical aura without headache in someone with a known pattern is usually not dangerous. The difficulty is telling it apart from look-alikes. The classification says that without a migraine headache, distinguishing aura from mimics that may signal serious disease, such as a transient ischemic attack (TIA), "becomes more difficult and often requires investigation" (9). Other causes, particularly TIA, should be ruled out when:

• the aura happens for the first time after age 40,

• the symptoms are only negative (a gap or loss, without any sparkle or tingling), or

• the aura is prolonged or very short (9).

Mayo Clinic also lists visual changes without a headache, and headaches or visual changes that begin after age 50, among reasons to see a professional right away (5).

Aura or something else? How to tell the difference

Only a clinician can tell for sure, but these features help you describe what happened:

Anything in the right-hand column — especially for the first time — is a reason for urgent or emergency care. A long history of aura does not rule out other causes, so an aura that feels different deserves the same caution.

Is migraine with aura dangerous?

For most people, aura attacks are painful and disruptive but do not cause lasting harm. Still, there are three risk questions worth understanding.

Migraine with aura and stroke risk

A 2009 meta-analysis in The BMJ, which pooled studies of migraine and cardiovascular disease, found that migraine with aura was linked to about twice the relative risk of ischemic stroke (pooled relative risk 2.16) compared with people without migraine; migraine without aura showed no significant increase (1.23) (10). Age under 45, smoking and oral contraceptive use further increased the risk (10).

Two things to keep in mind. A relative risk compares groups; it does not tell you your personal chance of a stroke, which depends on age, blood pressure, smoking and other factors your doctor can check. And the useful response is practical: tell every doctor you have aura, do not smoke, and keep an eye on blood pressure.

Migraine with aura and birth control

Estrogen-containing birth control is one of the most important questions for women with aura. The NHS lists "migraines with warning signs called aura" among conditions that may make the combined pill unsuitable, and advises asking a doctor, nurse or pharmacist whether it is safe for you (11). If you develop aura while already on a combined pill, patch or ring, tell your prescriber — do not stop contraception without a plan. Hormones and migraine around your period are covered in our guide to menstrual migraine.

Migraine with aura and medicines

Some migraine medicines have specific limits. For example, the US prescribing information for sumatriptan (Imitrex) lists a history of stroke, transient ischemic attack, or hemiplegic or basilar migraine among its contraindications, because these patients are at higher risk of stroke (12). The same label states it is indicated for the acute treatment of migraine with or without aura in adults (12). Which medicine is right for you, and when to take it during an aura, is a question for your doctor.

Migraine with aura treatment: what doctors use

Migraine with aura is treated with the same main tools as other migraine. The American Headache Society's 2021 consensus statement describes acute options including triptans, NSAIDs, gepants (small-molecule CGRP receptor blockers), lasmiditan and a remote neuromodulation device, and preventive options including CGRP antibodies, neuromodulation and behavioral therapies such as cognitive behavioral therapy, biofeedback and relaxation (13). Its conclusion: choices should weigh benefit against established treatments and the person's own characteristics and preferences (13). For more on the options, see migraine treatment.

How to get through an aura: practical steps

1. Stop driving or any risky task and wait until all symptoms have fully cleared.

2. Note the time the aura began and which symptoms you have.

3. Sit or lie down somewhere dim and quiet.

4. Follow the plan your doctor gave you for attacks. If you do not have one, ask for one at your next visit, including when to take your medicine if you get aura.

5. Drink water and eat something if you have gone a long time without.

6. Check the clock and your body: more than 60 minutes, weakness on one side, vision loss in one eye or confusion means urgent help.

7. Write it down afterward — a diary is how patterns become visible.

Living with migraine aura: the questions people ask next

Why am I suddenly getting auras?

A new run of auras often follows a change: a new hormonal contraceptive, pregnancy or the postpartum period, perimenopause, poor sleep or a stressful stretch. But new aura after 40, aura without headache or aura that feels different should be checked, because other causes such as TIA need to be ruled out (9).

Can migraine aura cause permanent eye damage?

A typical aura is fully reversible by definition (1). A visual aura comes from the brain, not the eye. Symptoms that do not go away — or vision loss in one eye — need urgent medical care.

Can migraine aura last for weeks?

Rarely. Aura symptoms that persist for one week or more are classified as persistent aura without infarction, a complication diagnosed only after brain imaging rules out a stroke (8). An aura lasting longer than an hour already needs urgent advice (4).

Can I stop an aura from turning into a headache?

Acute treatment plans differ from person to person, and when to take a medicine during an aura is part of that plan. Ask your doctor what is right for you, and record in your diary when you took it and what happened next.

Does aura mean my migraines are worse?

Not necessarily. Aura describes the type of attack, not how severe it is. Many people have both aura and non-aura attacks (1).

Before you blame yourself

When aura hits in the middle of a meeting, it is tempting to think, "I should have seen this coming." Before you blame yourself, look at your data. Aura is a brain wave you did not choose, sitting on top of a genetic tendency. What you can work with are the loads around it. Look back at the 2–3 days before your last few auras: sleep, meals, stress, alcohol, where you were in your cycle. Pick one lever — for example, the same wake-up time every day or regular meals — and keep it for 2 weeks. Then compare. One change at a time teaches you more than a long list of rules, and it leaves no room for guilt.

When to see a doctor

See a doctor for your first aura and whenever your aura changes. Book an appointment if attacks are severe or getting worse, lasting longer than usual, happening more than once a week, hard to control or regularly come around your period (4).

Get urgent advice if aura symptoms last longer than 1 hour, an attack lasts longer than 72 hours, or you are pregnant or have just had a baby (4). See a professional right away for visual changes in only one eye, visual changes without a headache, or headaches or visual changes that begin after age 50 (5).

Call 911 for a sudden, extremely painful headache; problems speaking or remembering; vision loss, or blurred or double vision; drowsiness or confusion; a seizure; a very high temperature with signs of meningitis; weakness on one side of the body or face; or a headache after a recent head injury (4). Do not drive yourself.

How to bring this up with your doctor

• Describe the aura step by step: what came first, how it spread, how long each part lasted, and whether a headache followed. A drawing of the visual part helps.

• Say whether it was one eye or both, and whether anything was weak rather than numb.

• Ask by name: "Is this migraine with aura?" "Does my aura change which birth control or hormone therapy is safe for me?" "Which acute treatment is safe for me, and when should I take it?" "Should we talk about prevention?"

• Share your risk factors: smoking, blood pressure, a family history of stroke or heart disease.

• If you feel dismissed, say: "This aura affects my speech and vision, and I want to understand my stroke risk and my treatment options. Can you refer me to a neurologist or headache specialist?"

Our migraine headache diary guide shows what to record before a visit.

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How Welltory helps — and what it cannot do

What it cannot do. Welltory is a general wellness product, not a medical device. It does not measure brain activity, it cannot detect cortical spreading depression or tell an aura from a stroke, it does not diagnose migraine and it cannot predict an attack. Our review of whether a smartwatch can predict a migraine explains why no wearable can do that today. If you have stroke-like symptoms, call for help first.

What it can do is help you see the context around your auras, measured the same way against your own baseline:

• A quick heart rate and HRV reading with your phone camera. It is a spot reading, not continuous monitoring; follow the measurement guide and the tips for accurate HRV readings.

• Sleep, resting heart rate and activity from your watch or ring. You can connect Apple Health on iPhone, or Health Connect and Samsung Health on Android, plus sources such as Oura and Fitbit.

• Tag what happened. If you use an iPhone with an Apple Watch or Oura ring, the Today screen flags stress stretches and asks "What happened?" — you can tag "aura," "word-finding trouble," "short night" or "skipped lunch." On iOS, My Patterns groups those tags so you can look back at what came before; some sections need a paid plan.

• A log for your doctor. You can export your data as a CSV file from the web app and bring it, with your aura notes, to your appointment. Patterns are links to discuss with your doctor, not proof of a trigger.

Working this out with other women. Welltory Migraine Lab is a paid, moderated online community for women aged 18 to 65 living with migraine; you do not need a diagnosis to join. It opens on December 1, 2026; you can book your place now, and your paid period starts on the opening day. Members get a personal strategy built on their own data, a community of women with similar symptoms, and a medical board that explains what is happening in the body. It is education and peer support, not medical care, and it does not replace your clinician. Join Migraine Lab or read what Migraine Lab is, who it is for and what it costs.

How we made it

We based this article on the International Classification of Headache Disorders (ICHD-3), NHS guidance on migraine and the combined pill, Mayo Clinic patient guidance, the American Headache Society's 2021 consensus statement, US prescribing information for sumatriptan, and peer-reviewed research in The Journal of Headache and Pain (REFORM, 2024), PNAS (2001) and The BMJ (2009). Every number was checked against the source we cite on November 10, 2026. Search questions came from what people in the United States most often ask about migraine aura. For the product section, we checked every function against the Welltory Help Center on November 10, 2026.

Made with AI tools, then edited and fact-checked by the Welltory team. See our Editorial & AI policy.

Jane Smorodnikova, co-founder of Welltory, built the methodology behind how we read physiological data.

Written by Tatsiana Yashyna.

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