When a Headache Needs Medical Attention: Migraine Red Flags You Shouldn't Ignore

One of the questions I get asked often is: "How do I know if my headache is 'just a migraine' or something more serious?"

The good news is that the vast majority of headaches, including migraines, are not caused by dangerous conditions. They can certainly be debilitating, but they are usually not life-threatening. That said, there are a handful of situations where a headache deserves urgent medical attention or further investigation.

As a naturopathic doctor, I spend a lot of time helping patients manage migraines with nutrition, supplements, acupuncture, lifestyle changes, and prescription medications when appropriate. But there are also times when the safest thing I can do is recognize that someone needs imaging or an urgent medical assessment.

If any of the situations below apply to you, I don't want you booking an appointment with me first. I want you to contact your family physician, visit an urgent care clinic, or go to the emergency department, depending on the severity of your symptoms. I would be happy to see you after, once you are stable, to help you recover and prevent recurrence when possible.

A Brand New Severe Headache

If you've never had migraines before and suddenly develop a significant headache, especially if you're over the age of 50, it deserves medical evaluation.

Migraines often begin earlier in life. While it's certainly possible to develop them later, a completely new headache pattern should be investigated before assuming it's a migraine.

The "Worst Headache of Your Life"

A headache that reaches maximum intensity within seconds or minutes is called a thunderclap headache. This is not something to monitor at home.

Call 911 or go to the nearest emergency department immediately, as this can be a sign of bleeding around the brain or another serious condition.

Headaches Triggered by Coughing, Sneezing, Straining or Exercise

If your headache consistently occurs or becomes dramatically worse when you:

• cough

• sneeze

• lift something heavy

• strain during a bowel movement

• bend over

• exercise

it should be investigated with imaging. I cannot order you an MRI or a CT but your family doctor can.

These activities temporarily increase pressure inside the skull. While there are benign causes, headaches consistently triggered by increased pressure warrant imaging to rule out structural problems.

Progressive Headaches

Migraines often fluctuate and some months are better than others. What concerns me is a headache that is becoming steadily more frequent, more severe, or different than it used to be over weeks or months. A changing headache pattern deserves imaging.

New Neurological Symptoms

Migraines can absolutely cause neurological symptoms, particularly migraine with aura. However, new neurological symptoms that you've never experienced before should be assessed promptly.

These include:

• weakness

• difficulty speaking

• persistent numbness

• loss of coordination

• double vision

• confusion

• difficulty walking

If these symptoms are sudden or severe, call 911 immediately.

Fever, Neck Stiffness or Feeling Very Unwell

A headache accompanied by:

• fever

• stiff neck

• confusion

• severe drowsiness

• persistent vomiting

is not a typical migraine presentation. These symptoms require urgent medical assessment at the ER

Headache After a Head Injury

Any new or worsening headache following a significant head injury should be evaluated, particularly if there was loss of consciousness, confusion, repeated vomiting, or increasing drowsiness. This would be an ER visit.

Headaches That Wake You From Sleep

Occasionally migraines occur overnight. However, headaches that repeatedly wake you from sleep or are consistently present first thing every morning, particularly if accompanied by vomiting, should be assessed by a family physician.

Headaches During Pregnancy or Shortly After Delivery

Pregnancy changes the way we think about headaches. Although many headaches during pregnancy are benign, pregnancy also increases the risk of conditions such as preeclampsia and cerebral venous sinus thrombosis. Any new, severe, or unusual headache during pregnancy or in the weeks following delivery deserves prompt medical assessment.

Headache With Vision Changes

Temporary visual aura is common in migraine and not too concerning.

What concerns me are:

• persistent vision loss, beyond the migraine

• double vision

• new blind spots that don't resolve

• significant changes in vision

These symptoms require urgent assessment.

Headache in Someone With Cancer or a Weakened Immune System

People with:

• active cancer

• HIV

• organ transplants

• significant immune suppression

should have new headaches assessed promptly because the range of possible causes is different.

What Happens After You've Been Assessed?

If imaging and your medical assessment are reassuring, that's often when I can be most helpful. Once serious causes have been ruled out, we can focus on understanding why you're getting headaches and how to reduce both their frequency and severity.

That might include:

• identifying migraine patterns

• improving sleep

• addressing hormonal influences

• optimizing nutrition

• evidence-based supplements

• acupuncture

• prescription medications when appropriate

The Bottom Line

Most headaches are not dangerous, but there are certain situations where it's important not to assume it's "just another migraine." If your headache is new, changing, associated with neurological symptoms, triggered by increased pressure, or simply doesn't feel like your usual headache, I would much rather you be evaluated by your family physician or the emergency department first.

Once we've confirmed there's nothing more serious going on, I'd be happy to help you build a long-term plan to reduce your migraines and improve your quality of life.

© 2025. All rights reserved.

Disclaimer: All content on this website is for informational purposes only, does not constitute medical advice, and does not establish any kind of patient-doctor relationship by your use of this website. A patient-doctor relationship is only established after we have expressly entered into a written agreement with you that you have signed the consent forms, including our fee structure and other terms to represent you in a specific matter. Although we strive to provide information that is accurate, the information presented here in not a substitute for any kind of professional advice and you should not rely sole on this information or expect it to apply to your specific situation. Always consult a qualified professional for your particular needs.