Why Do I Get Migraine Headaches?
The honest verdict
This is usually not an allergy
Migraine headaches are rarely caused by an allergy. They are a complex neurological disorder involving changes in brain activity, blood flow, and nerve signaling. While some people report that certain foods (aged cheese, red wine, chocolate) or environmental factors (pollen, strong smells) can trigger a migraine, this is not an allergic reaction — it is a sensitivity or trigger response in a predisposed nervous system. True allergies involve the immune system and do not typically cause migraine-type head pain. If you experience recurrent headaches, a neurologist or headache specialist is the right clinician to consult, not an allergist.
This is a general research summary, not a diagnosis. It can't tell you what's causing your symptom — a clinician can.
Check this first
When migraine headaches is an emergency
Most of the time this can be handled calmly. But a few signs mean you shouldn't wait. Match what you're seeing to the right level of care below. Because this symptom can involve the nerves or the whole body, it's worth getting a clinician's eyes on it rather than self-treating.
If any emergency sign below is present, call 911 or go to the ER now.
- Emergency
Sudden, severe 'thunderclap' headache that reaches maximum intensity within seconds to a minute — call 911 (possible subarachnoid hemorrhage or other vascular emergency).
Call 911 or go to the ER now
- Emergency
Headache with fever, stiff neck, confusion, seizures, or double vision — go to the ER (possible meningitis or encephalitis).
Call 911 or go to the ER now
- Emergency
Headache accompanied by weakness on one side of the body, slurred speech, or facial drooping — call 911 (possible stroke).
Call 911 or go to the ER now
- Urgent
Headache after a head injury, even if the injury seemed minor — seek urgent care or ER (possible concussion or intracranial bleeding).
Get seen today — urgent care or same-day visit
- See a doctor
New or worsening headaches in someone over 50, or headaches that wake you from sleep — see a clinician for evaluation (possible underlying condition).
Book a routine visit with a clinician
When in doubt, err toward getting seen. These tiers are a general guide, not a substitute for a clinician's judgment about your specific situation.
Key facts
Migraine affects about 12% of the U.S. population, including 18% of women and 6% of men, and is the second leading cause of years lived with disability worldwide.
About one-third of people with migraine experience an aura — visual, sensory, or speech disturbances that precede or accompany the headache phase.
Migraine is three times more common in women than in men, largely due to hormonal influences, particularly estrogen fluctuations.
What's causing it
The same symptom can come from very different places. Here are the usual suspects for Head — typically one-sided, throbbing pain that can affect the temple, behind the eye, or the back of the head, tagged by mechanism and how common each one is — so you can see where an allergy actually fits.
Neurological dysfunction
Migraine is primarily a neurological disorder involving abnormal brain activity that affects nerve signals, blood flow, and chemical balances in the brain. This leads to the characteristic throbbing pain, often on one side of the head, along with associated symptoms like nausea, vomiting, and sensitivity to light and sound.
Genetic predisposition
Migraine often runs in families, suggesting a strong genetic component. If one or both parents have migraines, a person is significantly more likely to experience them. Specific gene variants have been linked to migraine susceptibility, particularly migraine with aura.
Environmental and lifestyle triggers
Common migraine triggers include stress, hormonal changes (menstruation, pregnancy, menopause), irregular sleep, skipped meals, dehydration, weather changes, and bright or flickering lights. Identifying and managing these triggers is a key part of migraine prevention.
Hormonal fluctuations
Many women experience migraines linked to their menstrual cycle, often around the start of their period. Pregnancy, menopause, and hormonal contraceptives can also influence migraine frequency and severity. These are called menstrual migraines and are related to estrogen level changes.
Dietary triggers
Certain foods and beverages can trigger migraines in some people, including aged cheeses, processed meats, red wine, chocolate, caffeine (both excess and withdrawal), and foods containing MSG or artificial sweeteners. These are trigger sensitivities, not allergies — they do not involve the immune system.
Medication overuse
Using acute migraine medications (triptans, NSAIDs, or combination pain relievers) too frequently — typically 10 or more days per month — can lead to medication-overuse headache, also called rebound headache. This creates a cycle where the medication itself contributes to more frequent headaches.
Is this an allergy? Usually, no
It's a common assumption, so it's worth being clear about — and pointing you toward what's more likely going on.
Migraine headaches are usually not an allergy. They are a neurological disorder with a distinct mechanism involving brain activity and nerve signaling — not the immune system. While some people report that certain foods (aged cheese, red wine, chocolate) or environmental factors (pollen, strong odors) can trigger a migraine, these are trigger sensitivities in a predisposed nervous system, not allergic reactions. True food allergies cause symptoms like hives, swelling, itching, and trouble breathing — not migraine-type head pain. If you have recurrent headaches, a neurologist is the appropriate specialist, not an allergist.
Because an allergy is unlikely to be the driver, the most useful next step is a clinician who can look at the actual cause — not an allergy test.
Relief you can try at home
If your symptom is mild and you have no red-flag signs, these gentle steps often help. They soothe — they don't replace figuring out the cause.
- 1
Rest in a dark, quiet room
Migraine attacks often worsen with light and sound. Lying down in a dark, quiet room can help reduce symptom intensity. Use an eye mask or blackout curtains if possible.
- 2
Apply a cold compress
Placing a cold pack or ice wrapped in a cloth on the forehead, temples, or back of the neck can help numb the pain and reduce throbbing. Apply for 15-20 minutes at a time.
- 3
Stay hydrated and consider caffeine
Dehydration can worsen migraines. Sip water or an electrolyte drink. For some people, a small amount of caffeine (coffee, tea) in early migraine can enhance pain relief, but avoid overuse as it can trigger rebound headaches.
- 4
Use acute migraine medication as prescribed
Over-the-counter NSAIDs (ibuprofen, naproxen) or combination pain relievers may help mild attacks. For moderate to severe migraines, prescription triptans or newer CGRP antagonists are often more effective. Take medication at the first sign of an attack for best results.
- 5
Try non-medication approaches
Some people find relief with acupressure, gentle neck stretches, or peppermint oil applied to the temples. Biofeedback and cognitive behavioral therapy have evidence for reducing migraine frequency and severity when used regularly.
Stop any step that makes things worse. If the symptom isn't easing within a few days, check in with a clinician.
When to see a doctor
See a clinician if you experience recurrent headaches that interfere with daily life, if your headache pattern changes significantly, or if over-the-counter medications are not providing relief. A neurologist or headache specialist can help diagnose migraine and develop a treatment plan that may include preventive medications, acute treatments, and lifestyle modifications. Seek emergency care for sudden, severe 'thunderclap' headaches, headaches with fever and stiff neck, headaches after head injury, or headaches accompanied by neurological symptoms like weakness, slurred speech, or confusion.
❓Frequently Asked Questions
There is no strong evidence that allergies directly cause migraines. Allergic rhinitis (hay fever) can cause sinus pressure and headache, but this is different from a migraine. Some people with migraines report that allergens like pollen or strong perfumes can trigger an attack, but this is a sensitivity response in the nervous system, not an immune-mediated allergic reaction. Treating allergies may help some individuals, but it is not a primary treatment for migraine.
Migraines are often misdiagnosed as sinus headaches because both can cause facial pressure and pain. However, true sinus headaches are caused by sinus infection or inflammation and are accompanied by thick nasal discharge, fever, and facial tenderness. Migraines typically involve throbbing pain on one side, nausea, and sensitivity to light and sound. Most people who think they have sinus headaches actually have migraines.
Common dietary migraine triggers include aged cheeses (blue cheese, cheddar), processed meats (salami, hot dogs), red wine, chocolate, caffeine (excess or withdrawal), foods containing MSG, and artificial sweeteners like aspartame. However, triggers are highly individual — what triggers one person's migraine may not affect another. Keeping a headache diary can help identify personal triggers.
Go to the ER for a sudden, severe 'thunderclap' headache that peaks within seconds; a headache with fever, stiff neck, confusion, or seizures; a headache after a head injury; or a headache accompanied by weakness on one side, slurred speech, or vision loss. These can signal a stroke, meningitis, aneurysm, or other emergency.
Yes — stress is one of the most common migraine triggers. Emotional stress can cause changes in brain chemistry and muscle tension that precipitate a migraine attack. Learning stress management techniques such as relaxation exercises, meditation, biofeedback, and regular physical activity can help reduce migraine frequency and severity.
Yes, migraines often run in families. If one parent has migraines, a child has about a 50% chance of experiencing them. If both parents have migraines, the risk increases further. Specific genetic mutations have been identified for a rare type of migraine called familial hemiplegic migraine, but most common migraines involve multiple genetic factors.
Medically reviewed by
Dr. Chet TharpeMD
Last reviewed July 2026
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Read moreThe best next step is a real clinician
This symptom is usually not driven by an allergy, so an allergy test won't give you the answer. A primary care doctor or the right specialist can examine what's actually going on and guide you from there.
Curex focuses on at-home allergy testing and immunotherapy, which isn't the right fit for this symptom — and never a substitute for medical care.
- 1Mayo Clinic — Migraine: Symptoms and causes
- 2Cleveland Clinic — Migraine Headaches: Causes, Treatment & Symptoms
- 3American Migraine Foundation — Migraine Facts
- 4National Institute of Neurological Disorders and Stroke (NINDS) — Migraine Information Page
- 5MedlinePlus — Migraine (National Library of Medicine)
This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. It cannot tell you what is causing your migraine headaches or whether it is an allergy. If you have any emergency sign — trouble breathing, fast-spreading swelling, sudden weakness or confusion, or severe pain — call 911 or go to the nearest emergency room. For anything that is new, worsening, or persistent, see a licensed healthcare provider. Curex focuses on at-home allergy testing and immunotherapy, which is not the appropriate care for this symptom and never a substitute for a clinician.