When to Go to the ER for a Migraine (and When You Can Wait)

By Laurine NicolettiOctober 7, 202612 min

It is 2 a.m. and your head is pounding. Or you are in the middle of a migraine that feels a bit different from the usual ones, and a small voice asks: "Should I be at the hospital?" That second-guessing is exhausting on top of the pain.

Knowing when to go to the ER for a migraine is mostly about spotting what is new or different, not about how much it hurts. This article walks you through the signs doctors treat as red flags, what can wait for a regular appointment, and how to prepare. It is general information, not a diagnosis. If you are worried right now, trust that feeling and get help.

If you want the bigger picture on treatments and day-to-day coping, our Migraine diagnosis guide is a good place to start.

In short

Most migraine attacks can be handled at home, but a headache that starts suddenly and is extremely painful, or comes with new weakness, speech trouble, confusion, seizure or a stiff neck with fever, needs emergency care.
According to the NHS, a headache with vision problems, vomiting, or pain triggered by coughing or exercise calls for an urgent appointment or a call to the NHS 111 line, even if it is not a 999 situation.
The American Migraine Foundation says a substantial change in your usual headache pattern is worth a medical conversation.
Frequent or long-lasting attacks that match your usual pattern are best handled with your regular doctor, not the emergency department.

When should you go to the ER for a migraine or headache?

Go to the emergency room, or call your local emergency number (911 in the US, 999 in the UK), if your headache is sudden and severe, or comes with new neurological symptoms. This is the shortest and most useful rule, and it comes up in every reliable source.

The NHS says to call 999 or go to A&E if you have a headache and:

it started suddenly and is extremely painful
you have had a seizure
you have numbness or weakness in your body or face
you find it hard to speak, balance, walk or remember things
you are drowsy or confused
you have lost your vision
you have had a head injury within the last 3 months
you have a rash that does not fade when a glass is rolled over it
you have a very high temperature, a stiff neck, or bright lights are bothering you

The Mayo Clinic gives a very similar list: the worst headache of your life, a sudden severe headache, or a headache with confusion, fainting, numbness or weakness on one side, stiff neck, or trouble seeing, speaking or walking.

The Cleveland Clinic adds a helpful angle for people who already live with migraine: go if you have a new level of pain you have never felt before, or a new type of pain or a new spot on your head, especially with vision changes or speech trouble that you have not had before.

If you think you might be having a stroke, the NHS stroke guidance is to call 999 straight away for face drooping, arm weakness or speech problems, even if the signs have already faded.

One practical point: the NHS says not to drive yourself to A&E. Ask someone to take you, or call an ambulance.

What is a thunderclap headache?

A thunderclap headache is a severe headache that peaks within about a minute. The Mayo Clinic explains that it can warn of serious conditions, usually involving bleeding in and around the brain, and should be treated as an emergency even if it fades.

Migraine pain normally builds over minutes to hours. A headache that goes from nothing to maximum in seconds is a different pattern, and that difference is exactly what doctors want to check.

When should you get medical advice quickly, even if it is not an emergency?

If your symptoms are worrying but stable, an urgent appointment or a call to a nurse line is usually the right step. Think of this as the middle zone between "wait it out" and "call an ambulance".

The NHS suggests asking for an urgent GP appointment or calling NHS 111 if you have a headache and:

vision or eye problems
pain triggered or made worse by coughing, sneezing, bending down or exercising
vomiting
jaw pain when eating, or a sore or tender scalp
a child whose headache is getting worse or wakes them at night

For people with migraine specifically, the NHS migraine page adds an attack lasting longer than 72 hours, aura symptoms lasting longer than an hour, and being pregnant or having just had a baby.

What if a migraine will not stop?

A migraine attack that lasts more than 72 hours has its own name: status migrainosus. The Cleveland Clinic notes that you may need treatment in an emergency department, especially if nausea and vomiting set in. The American Migraine Foundation also lists constant migraine pain for 72 hours as a reason to seek emergency care.

If you are not sure how long your attacks usually last, our guide on how long a migraine lasts explains the typical stages and timing. Treatment questions, such as whether a triptan is right for you, belong with your doctor.

When can you wait?

If your headache matches your usual migraine pattern, you can usually manage it at home and mention it at your next appointment. The Cleveland Clinic says most attacks can be treated at home, and that if you feel able to manage your pain, there may be no need for the emergency room.

Signs that you are probably in familiar territory:

The pain, location and symptoms feel like your usual attacks.
Your usual aura (if you have one) comes and goes as it always does.
You can drink, rest and follow your normal routine for an attack.
There is no fever, stiff neck, weakness, confusion or sudden onset.

The American Migraine Foundation also makes a point that surprises many people: the emergency department is not the best place for frequent or ongoing headaches. In its guidance on the ED, emergency doctors are there to rule out serious causes and ease severe pain, and long-term management belongs with a headache-aware doctor.

Still, "can wait" is not the same as "ignore". The Mayo Clinic recommends seeing a doctor if headaches are more frequent or more severe than usual, do not improve with appropriate over-the-counter treatment, or keep you from working, sleeping or doing normal activities. If that sounds like you, our article on why you might have a headache every day may help you prepare for that conversation.

Is an unusual aura a reason to worry?

A new or very different aura deserves attention, while a familiar one that behaves as usual generally does not. Aura is the set of temporary changes, often visual, that some people get before or during a migraine. You can read more in our guide to migraine with aura.

According to the Cleveland Clinic, aura symptoms usually last between 5 and 60 minutes. If they last longer than that, it recommends contacting a healthcare provider right away so tests can rule out more serious causes. The same page says symptoms such as confusion, loss of consciousness or weakness on one side of the body call for emergency evaluation, as they can point to conditions like stroke.

The Mayo Clinic's page on ocular migraine also explains when to seek help for visual symptoms. Our own ophthalmic migraine guide covers the difference between visual aura and symptoms in one eye.

Quick checks that doctors find useful, according to the American Migraine Foundation's headache change guide:

Did the symptoms start all at once, rather than spreading gradually?
Did they last longer than 60 minutes or not fully go away?
Are they different from your usual aura?

If the answer to any of these is yes, get checked promptly.

Which special situations should you know about?

Some situations lower the threshold for getting a new headache checked. The American Migraine Foundation's list of red flags includes:

a new headache if you are older than 50, or if you have a history of cancer, HIV or an autoimmune condition
headaches that start or change during pregnancy, labor or just after birth
headaches that come on with coughing, sneezing, straining or sex
a headache that changes a lot with position
fever, chills, weight loss or night sweats alongside headache
persistent headache after a head injury

Why does age 50 matter?

A first-ever headache after 50 is one of the situations where doctors look for a cause. One example is giant cell arteritis, an inflammation of the arteries. The Mayo Clinic lists headache, jaw pain when chewing and scalp tenderness as common signs, and says that starting treatment quickly can help prevent vision loss. It is uncommon, but it is a good reason not to wait on a new headache at that age.

What about children and teens?

For children, the NHS advice above applies: a headache that keeps getting worse or wakes them at night calls for an urgent appointment. Most childhood headaches are not dangerous, and our guide to migraine in children and teens explains what parents can expect. Ask a doctor if you are unsure.

Why do doctors not always order a scan?

If you do go in, you may be surprised when the doctor does not order a CT or MRI, and that is often a good sign rather than a missed step. The American Migraine Foundation explains in Do I Need an MRI for My Migraine? that people who meet the criteria for migraine, have a normal exam and no significant change in their headache pattern do not need imaging. This guidance, from the American Academy of Neurology in 1994, was reaffirmed in the Choosing Wisely recommendations in 2013.

Imaging cannot identify migraine itself, so the diagnosis comes from your symptoms, history and a neurological exam. When your story does include red flags, scans, blood tests or a spinal fluid check may be used. The foundation says a CT scan is used in urgent cases such as stroke or bleeding in the brain, while an MRI shows finer detail.

How can you prepare without stressing?

A little preparation makes any visit, urgent or not, calmer and more useful. The American Migraine Foundation's ED guidance suggests expecting a long wait in a noisy, bright place, and bringing a letter from your headache doctor with your diagnosis and history, plus their contact details.

Things that help, whatever the setting:

A short list of your usual symptoms and what feels different this time.
The time the headache started, and whether it came on suddenly or built up.
Your current medicines, and what you have already taken during this attack.
Sunglasses, earplugs and water, if you have a light and sound sensitivity.
Someone who can come with you and drive you.

Hospital treatment is usually aimed at easing the pain enough to go home and rest. The foundation notes you are not likely to leave completely pain free. Every medicine decision, including which ones you take and when, is one for the clinician treating you.

What should you remember when you are unsure?

When in doubt, the safer choice is to ask for help. A short list to keep in mind:

Sudden, extreme, or new (a different pain, new location, new symptoms): emergency care.
Worrying but stable (vision trouble, vomiting, pain with coughing or exercise, aura over an hour, an attack over 72 hours, pregnancy): urgent advice the same day.
Familiar and manageable: rest, your usual plan, and a mention at your next appointment.

Nobody has ever been wrong to ask a professional about a headache that scares them. And if your usual attacks keep getting more frequent or harder to manage, that is a conversation to have with your doctor, even when no emergency is involved.

Frequently asked questions

Can a migraine be an emergency?

A typical migraine is usually not an emergency, but the symptoms can overlap with more serious conditions. The Cleveland Clinic says to head to the ER if the pain is at a new level, peaks all at once, or comes with confusion, speech trouble, new vision changes, neck stiffness, numbness, weakness or fever.

Should I go to the ER if my migraine lasts more than 72 hours?

Yes, it is worth getting care. An attack that lasts longer than 72 hours is called status migrainosus, and the American Migraine Foundation lists it as a reason to go to the emergency department. The NHS also suggests urgent advice for attacks that last this long.

Is it normal to have a headache with a stiff neck and fever?

No, that combination needs urgent attention. The American Migraine Foundation says high fever and neck stiffness alongside what seem like typical migraine symptoms can be signs of meningitis, and the NHS lists a very high temperature with a stiff neck as a reason to call 999 or go to A&E.

Will the ER cure my migraine?

Probably not completely. The emergency team can check for serious causes and give medicine into a muscle or vein to lower the pain, but the American Migraine Foundation says you are usually not going to leave pain free. Ongoing prevention and planning are best handled by your regular doctor or a headache specialist.

Sources

Written by Laurine Nicoletti, founder of Mellow, who has lived with migraine since she was 21. Learn more · How we write our articles

October 1, 202611 min

Is Migraine Hereditary? What Genetics Really Says

Is migraine hereditary? Yes, genes play a role, but there is no single migraine gene. See what studies say and what it means for your children.

May 7, 20269 min

Why Do I Have a Headache Every Day?

Having a headache every day isn't normal. Chronic tension-type headache, medication overuse, transformed migraine: the real causes and what to do.

April 27, 20269 min

Migraine vs Headache: What's the Difference?

A migraine isn't just a bad headache. Discover the real differences between tension headaches and migraine attacks, and why it matters to tell them apart.

All “Diagnosis” articles