Tired after a migraine? The attack has a recovery tail.
Tiredness is the most-reported postdrome symptom. Here's what the research shows, what's still unknown, and how to track the recovery tail your log keeps missing.
Why am I so tired after a migraine?
Tiredness after a migraine is the postdrome, the final phase of the attack, and it's the most commonly reported symptom of that phase in the research Bose and Goadsby have summarized on the after-phase. For most people it clears within a day or two. Your fatigue is a recognized part of the attack.
The headache can resolve hours before the rest of the brain does. So you wake up pain-free and still feel wrung out: heavy limbs, slow thinking, a body that wants the couch by early afternoon. Plenty of people call it a migraine hangover. Clinicians call it the postdrome, and they've studied it closely enough to say three things. It's common, it has measurable effects in the brain, and it follows a pattern you can track.
None of that is laziness.
How common is tiredness after a migraine?
Very common. When researchers had people log symptoms in real time with electronic diaries, so nobody was relying on memory weeks later, most attacks were followed by non-headache symptoms. 'Tired or weary' topped the list. Difficulty concentrating and a stiff neck came next.
The diary method matters here. Recall-based surveys are a weak tool for the after-phase, because by the time someone asks you, the headache is the part you remember. The tiredness blurs into 'I was off for a day.' Real-time logging catches it as its own thing, and that's why the diary data puts fatigue first.
Migraine doesn't end when the headache does. In an e-diary study of patients tracked through their attacks, many reported symptoms beyond head pain during the postdrome, the stretch after the pain fades. Fatigue, trouble concentrating, and a general sense of being off are common. The attack may be over, but the recovery often isn't.
of patients logged non-headache symptoms after the headache phaseGiffin et al. 2016, Neurology
Most people who go through the postdrome describe it the same way: tired, weary, wiped out. In Giffin et al.'s 2016 study of how people experience the hours after a migraine, that kind of exhaustion was among the most commonly reported feelings. The attack may be over, but the body clearly hasn't caught up yet.
of those named tiredness or weariness, the top postdrome symptomGiffin et al. 2016, via Bose & Goadsby review
The postdrome, the hangover phase after the headache itself fades, can last a good while. Many people with migraine describe feeling drained, foggy, and off for a day or more, even once the pain is gone.
average postdrome duration reportedKelman 2006, Cephalalgia
What's happening in the brain after the headache stops?
Science doesn't have one settled explanation yet, and any source offering a tidy one is ahead of the evidence. What it does have is a set of solid observations.
Imaging work from Peter Goadsby's group at King's College London found blood flow changes across the brain that lasted after the headache had resolved. Earlier PET work from the same group showed the hypothalamus switching on in the premonitory phase, hours before the pain starts. And the hypothalamus is the region that regulates sleep, alertness and appetite. For people with aura, the cortical spreading depression behind the aura is followed by a long stretch of reduced blood flow in the affected cortex.
CGRP comes up a lot too. Levels rise during attacks, and that's why CGRP-targeting drugs exist. Whether its clearance afterward drives the fatigue is a reasonable hypothesis. No one has shown it yet.
Mechanism: what's shown vs. what's guessed
Shown: brain blood flow changes persisting into the postdrome on imaging; hypothalamic activation in the premonitory phase (Maniyar et al. 2014, Brain); prolonged reduced blood flow after cortical spreading depression in aura. Plausible, unproven: that CGRP, elevated during attacks, contributes to the after-phase as it clears. Open question: why some attacks leave a long tail and others barely any.
Tracking the recovery tail
Most migraine logs stop when the headache stops. You record onset, intensity, the triptan or gepant you took, and the time the pain lifted. Then the entry closes, and the tiredness that follows, sometimes the longest part of the attack, never makes it into the record.
That gap costs you at appointments. When a neurologist is deciding whether a preventive is working, functional days lost matter. A day you couldn't concentrate through counts as one. If your log ends at headache relief, it understates what each attack takes from you.
Postdrome was built around that tail. The timeline keeps running after the pain ends, so fatigue, fog, light sensitivity and neck stiffness get logged as their own symptoms until they actually clear. Aura Mode keeps it dim and low-effort for the days when reading a screen is work. Your data stays on your device, and it's a one-time purchase.
What to log
When
Why it matters later
Headache end time
When the pain lifts
Marks where the postdrome starts, so its length is measurable
Fatigue (none, mild, moderate, severe)
Morning and evening until it clears
Shows how long the tail runs and whether a preventive shortens it
Brain fog or trouble concentrating
Same check-ins
Often what makes work hard the day after; useful for accommodation notes
Residual light sensitivity, neck stiffness
When you notice them
Helps separate the after-phase from a new attack starting
Back-to-baseline time
When you feel like yourself again
Gives total attack length, headache plus tail, for your clinician
A minimal after-phase log. Two check-ins a day is enough.
When should tiredness after a migraine worry you?
Postdrome fatigue should ease. If it doesn't, or if something new shows up, see a clinician.
Get urgent care for weakness on one side, slurred speech, confusion, a sudden worst-ever headache, or fever with a stiff neck that feels different from your usual post-attack stiffness. Those aren't postdrome.
Book a regular appointment if the tiredness lasts for days after most attacks, or if it's there between attacks too. Anemia, thyroid problems, sleep disorders and depression can all cause persistent fatigue, and they're worth ruling out. Mention it as well if you're taking acute medication on a lot of days. Using triptans on 10 or more days a month is a recognized route to medication-overuse headache, and frequent attacks stack postdrome days back to back.
Bring the log. A record of how long your recovery tail actually runs makes a short appointment count.
Log the whole attack, recovery tail included. Get Postdrome.
Most trackers close the entry when the pain lifts, and that's where the most commonly reported postdrome symptom begins. Postdrome keeps the timeline open through the after-phase. It logs fatigue, fog, photophobia and neck stiffness until they clear, in a dim Aura Mode for low-capacity days. Data stays on your device, and you pay once.
