How Long Does a Migraine Last?
"How long is this attack going to last?" That's probably the question on your mind from the very first signs. And the answer is more complex than you might think.
According to the International Classification of Headache Disorders (ICHD-3), the headache phase of a migraine lasts between 4 and 72 hours without treatment. But that number alone tells only part of the story. A migraine attack actually unfolds in several phases that can stretch over nearly a week for a single episode.
Understanding this timeline means better anticipation, better preparation, and recognizing the windows where your treatment will be most effective.
The Headache Phase: 4 to 72 Hours
When people talk about "how long a migraine lasts," they usually mean the headache phase itself. The one that puts you in bed, isolates you in the dark, makes it impossible to function.
This phase officially lasts between 4 and 72 hours without proper treatment. It's one of the diagnostic criteria for migraine according to ICHD-3.
In practice:
- Short attack: 4 to 8 hours
- Average attack: half a day to a full day
- Long attack: 2 to 3 days
- Beyond 72 hours: this is called status migrainosus, a medical emergency requiring care
Several factors influence this duration:
- The type of migraine (with or without aura)
- How quickly you take your acute treatment
- The effectiveness of the medication used
- Your triggers (stress, hormones, sleep)
- Your ability to rest early
Good news: with treatment taken as early as possible (ideally within the first 30 minutes), many people significantly shorten the headache phase, or even abort the attack entirely.
But a Migraine Doesn't Start with the Pain
Here's what most people don't realize: the headache phase is only the third phase of a migraine attack. Your brain starts malfunctioning long before you feel any actual pain.
A complete migraine attack unfolds in 4 distinct phases:
- Prodrome (24 to 48 hours before the pain)
- Aura (less than 60 minutes, in 20-30% of people with migraine)
- Headache (4 to 72 hours)
- Postdrome (24 to 48 hours after the pain)
For a severe attack, the total can stretch over 6 to 7 days. This is fundamental data, and it completely changes how we should understand what people with migraine actually go through.
Phase 1 — Prodrome: 24 to 48 Hours
The prodrome (also called the premonitory phase) is the very first phase of an attack. It usually starts 24 to 48 hours before the headache begins, but can sometimes kick in up to 72 hours ahead.
During this phase, the hypothalamus — which regulates many essential body functions (sleep, hunger, hormones, temperature) — enters a state of abnormal hyperactivation. This dysregulation is what causes prodrome symptoms.
Prodrome Symptoms
Prodrome symptoms vary from person to person, but the most common include:
- Unusual fatigue or, conversely, bursts of energy
- Repeated yawning (one of the most telltale signs)
- Food cravings (often for sweet or salty foods)
- Neck stiffness or cervical tension
- Mood changes: irritability, sadness, euphoria
- Difficulty concentrating, "brain fog"
- Increased sensitivity to light, sound, or smells
- Frequent urination
- Digestive issues: constipation or diarrhea
According to research, roughly 75 to 80% of people with migraine experience a prodrome phase during at least some of their attacks. But it remains widely underrecognized, because we tend to confuse these signs with triggers ("I had a chocolate craving, so chocolate triggered my migraine") when in reality they're symptoms of a migraine already in progress.
Why This Matters
Spotting your prodrome means gaining a 24 to 48-hour window to act. This window lets you:
- Rest and limit exposure to triggers
- Stay hydrated and eat regular meals
- Take your acute treatment earlier (and therefore more effectively)
- Adjust your schedule when possible (cancel an intense meeting, for example)
That's exactly why a migraine journal matters: it reveals your personal prodrome pattern, which is often unique to you.
Phase 2 — Aura: Less Than 60 Minutes
Aura affects only about 20 to 30% of people with migraine. It appears just before the headache phase (or sometimes during it), and officially lasts less than 60 minutes, most often between 5 and 30 minutes.
Types of Aura
The most common auras are:
- Visual (the most common, ~90% of auras): flashing lights, blind spots, zigzag lines, blurred vision
- Sensory: tingling or numbness on one side of the body, often starting in the fingers and moving toward the face
- Speech: difficulty finding words, slurred speech
- Motor: muscle weakness (rare — this is the "hemiplegic" form)
Aura is linked to a neurological phenomenon called cortical spreading depression: a slow wave of neuronal deactivation that travels across the cerebral cortex.
Important: Know When to Seek Help
A "classic" aura:
- Lasts less than an hour
- Disappears completely afterward
- Often follows a reproducible pattern from one attack to another
If you experience an aura that's unusual, lasts more than an hour, or comes with sudden weakness, get medical help quickly: some symptoms can resemble a stroke and need urgent evaluation.
Phase 3 — Headache: The Pain Phase
This is the phase everyone knows: the migraine "as we picture it."
It lasts between 4 and 72 hours without treatment, with:
- Throbbing pain, most often one-sided
- Moderate to severe intensity
- Worsening with physical activity (climbing stairs, bending over)
- Associated symptoms: nausea, vomiting, sensitivity to light and sound, sometimes to smells
During this phase, most people can do nothing but lie in a dark, quiet room. It's not about pain tolerance — it's the nature of the disease itself.
Phase 4 — Postdrome: 24 to 48 Hours
Here's the most overlooked phase, and yet one of the most disabling day-to-day.
Once the pain subsides, about 80% of people with migraine enter a phase called postdrome, sometimes nicknamed the "migraine hangover." This phase usually lasts 24 to 48 hours, but can sometimes extend over several days.
Postdrome Symptoms
- Extreme fatigue, sense of exhaustion
- Cognitive fog ("brain fog"): trouble concentrating, slowed thinking
- Diffuse muscle aches
- Lingering sensitivity to light and sound
- Mood changes: depression, irritability, sometimes a paradoxical euphoria
- A sense that your head is "fragile", like another attack could trigger at any moment
For many people with migraine, postdrome is just as disabling as the pain itself. You're not in pain anymore, but you're functioning at half-speed, struggling to focus, and you feel like you're "recovering" for several days.
Risk During This Phase
Postdrome is a period of heightened vulnerability. If you push through recovery (rushing back to work, exercising, screen exposure, alcohol), you risk triggering a superimposed new attack, before the previous one is even fully cleared.
The best approach during this phase: rest, hydration, regular meals, and avoiding known triggers.
Recap: Total Duration of a Migraine Attack
Here's what it adds up to:
| Phase | Duration | Frequency |
|---|---|---|
| Prodrome | 24 to 48h | ~75-80% |
| Aura | < 60 min | ~20-30% |
| Headache | 4 to 72h | 100% |
| Postdrome | 24 to 48h | ~80% |
| TOTAL | 2 to 7 days | — |
A "short and simple" attack can last 1 to 2 days. A "complete and long" attack can stretch over 6 to 7 days. When someone says "I had a migraine this week," there's a good chance it's literally true.
What About Chronic Migraine?
You may have heard the term "chronic migraine." It has a precise medical definition.
Chronic migraine is diagnosed when a person has:
- At least 15 headache days per month
- For at least 3 consecutive months
- With at least 8 days having migraine features
This form affects roughly 1-2% of adults. It usually develops through a gradual transformation from episodic migraine, often driven by overuse of acute medications.
If your attacks seem to be coming closer together, lasting longer, or becoming more frequent over the months, talk to your doctor. Episodic migraine that isn't properly managed can shift into chronic migraine, and it's much harder to reverse.
Why Tracking the Duration of Your Attacks Changes Everything
Knowing the average duration of your attacks gives you a realistic picture of your condition. Many people with migraine underestimate the real impact of their attacks because they only count the headache phase, ignoring the prodrome and postdrome.
When you track systematically:
- You identify your personal pattern (average duration, phases present, intensity)
- You spot prodrome signals unique to your body
- You can anticipate instead of just reacting
- You give your doctor concrete data to fine-tune your treatment
That's exactly what Mellow is built for: helping you log every phase of your attacks in seconds, without friction, and slowly take back control.
Sources
- World Health Organization — Headache disorders fact sheet (2024). Available at who.int
- Mayo Clinic — Migraine: Symptoms and causes. Available at mayoclinic.org
- American Migraine Foundation — The Timeline of a Migraine Attack. Available at americanmigrainefoundation.org
- Migraine World Summit — The Phases of Migraine: Prodrome, Postdrome, and the Pain In Between. Available at migraineworldsummit.com
- The Migraine Trust — Stages of a migraine attack. Available at migrainetrust.org
- International Classification of Headache Disorders (ICHD-3) — International Headache Society, 2018
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