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PubMed This is a summary of 23 peer-reviewed journal articles Updated
Neurology · Migraine

Mapping Your Migraine: Phases, Triggers, and Truths

At a Glance

A migraine is a cyclic neurological event with four potential phases: prodrome, aura, headache, and postdrome. Many perceived triggers, like food cravings, are actually early prodrome symptoms. Maintaining consistent sleep and eating routines helps raise your threshold against attacks.

Understanding a migraine attack requires looking beyond the moment of pain. A single migraine is not just a headache; it is a cyclic event that can last for several days, involving four distinct stages [1][2]. However, it is important to note that not everyone experiences all four phases. You may skip the aura or prodrome and still have a perfectly valid migraine diagnosis.

The Four Phases of a Migraine Attack

  1. Prodrome (Premonitory Phase): This “warning” phase can occur hours or even days before the pain starts. It is driven by the hypothalamus, the part of the brain that regulates internal balance [3][4].
    • Symptoms: Frequent yawning, food cravings, neck stiffness, mood changes, and increased thirst [3].
  2. Aura: About 25–30% of people experience this phase, usually lasting 5 to 60 minutes. It is caused by cortical spreading depression (CSD), a wave of electrical activity that moves across the brain [5][6].
    • Symptoms: Visual disturbances (flashing lights, blind spots), tingling in the face or hands, or difficulty speaking [5].
  3. Headache (Pain Phase): This is the most well-known phase, often characterized by throbbing pain on one side of the head, nausea, and sensitivity to light and sound [7][8].
  4. Postdrome: Often called a “migraine hangover,” this phase occurs after the pain subsides [9].
    • Symptoms: Feeling “washed out,” fatigue, “brain fog,” or lingering sensitivity to movement [9].

The Trigger Trap: Triggers vs. Early Symptoms

One of the most confusing parts of migraine is the difference between a trigger (something that causes the attack) and a premonitory symptom (a sign that the attack has already begun) [10][11].

  • The Chocolate Example: A patient might crave chocolate and then get a migraine. They assume the chocolate was the trigger. However, research suggests the brain was likely already in the prodrome phase, and the craving was actually an early symptom of the attack [10][12].
  • The Stress Paradox: While stress is a major risk factor, many people find that they experience a “let-down” migraine right after a stressful period ends [13].

Tracking Your Migraine Journey

Recent research has shown that our memory is often unreliable when it comes to identifying what started a migraine. This is known as recall bias [14].

  • Prospective vs. Retrospective: Studies show that when patients look back (retrospective), they often over-report certain triggers like food. However, when they track things daily in a prospective diary (like a smartphone app), they often find that their triggers are more about “surprisal”—sudden, unexpected changes in their daily routine [15][16].
  • The Threshold Concept: Think of your brain having a “migraine threshold.” One small trigger (like a glass of wine) might not cause an attack on its own. But if you have also had poor sleep and high stress, that same glass of wine might push you over your threshold [17][18].

Why Strict Diets Aren’t Always the Answer

While certain foods like aged cheeses or nitrates are common triggers for some, current medical guidelines are moving away from recommending strict, broad elimination diets for everyone [19][20].

  • Consistency over Avoidance: Maintaining a consistent routine—eating at the same time, staying hydrated, and keeping a regular sleep schedule—is often more effective at raising your migraine threshold than cutting out dozens of foods [19][21].
  • Nutritional Support: Rather than just “taking things away,” some research suggests adding certain supplements like magnesium or riboflavin (Vitamin B2) may help reduce attack frequency [22][23].

Common questions in this guide

Can I have a migraine without experiencing an aura?
Yes, not everyone experiences all four phases of a migraine attack. You can skip the aura or prodrome phase completely and still have a valid migraine diagnosis.
What is the difference between a migraine trigger and an early symptom?
A trigger is an external factor that causes an attack, while a prodrome symptom means the attack has already begun in the brain. For example, craving chocolate is often an early warning sign of a migraine rather than the actual cause of the pain.
What is a migraine hangover?
The migraine hangover, officially called the postdrome phase, happens after the headache pain goes away. During this time, you may feel extremely fatigued, experience brain fog, or have lingering sensitivity to movement.
Should I go on a strict diet to prevent my migraines?
Broad elimination diets are no longer routinely recommended for everyone with migraines. Instead, maintaining a highly consistent schedule for meals, sleep, and hydration is typically more effective at raising your tolerance to potential triggers.
What is the best way to track my migraine triggers?
Tracking your habits and symptoms daily using a prospective smartphone app or diary is the most accurate method. Relying on memory after an attack often leads to recall bias, causing you to misidentify what actually started the migraine.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.Based on my symptoms, am I a candidate for taking medication during the prodrome phase instead of waiting for the pain?
  2. 2.How can I differentiate between a food trigger and a prodromal food craving?
  3. 3.Which mobile app or diary format do you recommend for tracking my migraine cycles prospectively?
  4. 4.Are there specific lifestyle adjustments, like a consistent sleep schedule, that you prioritize over strict dietary changes for someone with my profile?

Questions For You

Tap a prompt to share your answer — we'll use it plus this page's context to start a tailored conversation.

References

References (23)
  1. 1

    Uncovering longitudinal changes in the brain functional connectome along the migraine cycle: a multilevel clinical connectome fingerprinting framework.

    Esteves I, Fouto AR, Ruiz-Tagle A, et al.

    The journal of headache and pain 2025; (26(1)):29 doi:10.1186/s10194-025-01969-6.

    PMID: 39930372
  2. 2

    Neuroimaging in the pre-ictal or premonitory phase of migraine: a narrative review.

    Karsan N, Goadsby PJ

    The journal of headache and pain 2023; (24(1)):106 doi:10.1186/s10194-023-01617-x.

    PMID: 37563570
  3. 3

    Longitudinal Neuroimaging over 30 Days: Temporal Characteristics of Migraine.

    Schulte LH, Mehnert J, May A

    Annals of neurology 2020; (87(4)):646-651 doi:10.1002/ana.25697.

    PMID: 32031707
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    The premonitory phase: A crucial stage in migraine.

    Gago-Veiga AB, Vivancos J, Sobrado M

    Neurologia 2021; (36(4)):298-304 doi:10.1016/j.nrl.2017.09.014.

    PMID: 29277522
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    Extra-Axial Inflammatory Signal in Parameninges in Migraine with Visual Aura.

    Hadjikhani N, Albrecht DS, Mainero C, et al.

    Annals of neurology 2020; (87(6)):939-949 doi:10.1002/ana.25731.

    PMID: 32239542
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    Migraine Aura: Updates in Pathophysiology and Management.

    Lai J, Dilli E

    Current neurology and neuroscience reports 2020; (20(6)):17 doi:10.1007/s11910-020-01037-3.

    PMID: 32430657
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    The incremental burden and healthcare resource utilization among people with migraine in Europe: Insights from the 2020 European National Health and Wellness Survey.

    Gendolla A, Brown JD, Mercadante AR, et al.

    Cephalalgia : an international journal of headache 2024; (44(12)):3331024241276415 doi:10.1177/03331024241276415.

    PMID: 39633516
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    Changes of migraine aura with advancing age of patients.

    Scutelnic A, Drangova H, Klein A, et al.

    The journal of headache and pain 2023; (24(1)):100 doi:10.1186/s10194-023-01642-w.

    PMID: 37528414
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    Effect of galcanezumab on severity and symptoms of migraine in phase 3 trials in patients with episodic or chronic migraine.

    Ament M, Day K, Stauffer VL, et al.

    The journal of headache and pain 2021; (22(1)):6 doi:10.1186/s10194-021-01215-9.

    PMID: 33549036
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    Overlap between perceived triggers, premonitory symptoms and symptom persistence across migraine phases: A REFORM study.

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    Cephalalgia : an international journal of headache 2025; (45(8)):3331024251364234 doi:10.1177/03331024251364234.

    PMID: 40980937
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    Are some patient-perceived migraine triggers simply early manifestations of the attack?

    Karsan N, Bose P, Newman J, Goadsby PJ

    Journal of neurology 2021; (268(5)):1885-1893 doi:10.1007/s00415-020-10344-1.

    PMID: 33399964
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    Insights from triggers and prodromal symptoms on how migraine attacks start: The threshold hypothesis.

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    Cephalalgia : an international journal of headache 2024; (44(10)):3331024241287224 doi:10.1177/03331024241287224.

    PMID: 39380339
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    Association between risk factors and migraine in Pakistani females.

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    BMC women's health 2023; (23(1)):642 doi:10.1186/s12905-023-02810-5.

    PMID: 38042798
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    Trigger Factors in Childhood Migraine: A Prospective Clinic-Based Study From North of France.

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    Evaluating Migraine Trigger Surprisal: Associations with Migraine Activity.

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    Information-Theoretic Trigger Surprisal and Future Headache Activity.

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This page provides educational information about the phases and triggers of migraine attacks. Always consult your neurologist or healthcare provider for an accurate diagnosis and personalized treatment plan.

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