The headache ends at 6 a.m. and the day is still gone.
For a lot of migraineurs the pain isn't the most disabling part of the attack. The postdrome is, and it lands exactly when you're trying to work again.
The pain stops and the day doesn't start
The pain breaks around six in the morning. The vice lets go, the nausea settles, and for about twenty minutes you think you got the day back. Then you stand up.
The hallway light is still too bright. You read the same work email four times and hold none of it. Your neck feels like it's been braced in a position you don't remember choosing. By two in the afternoon you've cancelled one call, pushed another to Friday, and told somebody you're fine, because the headache is technically over.
That gap, between the pain ending and the day actually working again, is the part your tracker has no field for. It closed the attack at 6 a.m.
The impairment ledger
Call it the impairment ledger. Every attack keeps two columns.
One column holds pain intensity, the number you hand a doctor on a 0 to 10 scale. It peaks during the headache. The other column holds functional hours, the ones where you can hold a thought, drive safely, read a contract, sit through a meeting without your eyes watering. The headache phase dominates the first column. For a meaningful share of patients, the postdrome dominates the second.
That isn't a claim that postdrome hurts more. Pain and impairment are separate axes, and the attack you'd rate 9/10 at three in the morning can cost you fewer working hours than the 3/10 fog that follows it through a Wednesday. Which column your neurologist ends up seeing depends almost entirely on which one your log recorded.
Pain intensity is the wrong scoreboard
Severity, in most migraine tools, means a number attached to the headache. Peak pain. Headache days per month. Time to relief after a triptan or a gepant. That's genuinely useful for picking an acute drug, and all of it is measured inside a window that shuts the second the pain does.
Disability instruments don't work that way. MIDAS asks how many days you missed work or school, how many days your productivity was cut at least in half, how many days of household work, family, and social activity went missing. Days and half-days, not degrees.
So a patient who takes a triptan at 2 a.m., aborts the headache by four, then spends twelve hours unable to concentrate has an excellent acute-treatment response and a lost day at the same time. Both are true. Only one of them lands in a headache-day count, and it's the flattering one.
What the diary studies actually found
Recall is the weak point here. Ask someone at a clinic visit three weeks later how they felt the day after an attack and you get a shrug, because postdrome is exactly the phase patients compress and underreport once the next attack has overwritten it.
Electronic diary work gets around that. Giffin and colleagues, publishing in Neurology in 2016, had patients record symptoms prospectively across the whole attack instead of reconstructing it afterwards. Non-headache symptoms after pain resolution showed up in the large majority of attacks, most commonly tiredness, difficulty concentrating, and neck stiffness.
Two findings there matter more than the headline percentage. The symptom mix is highly person-specific and tends to repeat within a patient from attack to attack, so your postdrome reliably looks like your postdrome. And the duration varies enough between people that any single answer to "how long does postdrome last" is misleading. ICHD-3 sets an outer limit on the postdromal phase, though the exact wording is worth checking against the current criteria rather than taking on faith.
81%
of migraine attacks came with at least one non-headache symptom after the pain resolved, recorded prospectively rather than from recallGiffin et al., Neurology 2016
21+
MIDAS score defining Grade IV severe disability, counted entirely in missed and half-capacity days, never in pain scoresMIDAS questionnaire scoring
One attack, two ledgers
Take an attack with a familiar shape. Aura at nine on a Tuesday night, pain building by ten, a triptan at eleven, asleep by one. Wednesday morning the pain is gone. In the tracker, the attack closed at 1 a.m. with a note that the medication worked.
Wednesday is where the bill arrives. You get the kids to school and can't remember whether you actually signed the form. You work with the overhead lights off and tell people the migraine was yesterday. Around three the neck stiffness starts and you spend two hours quietly braced for another attack that doesn't come. You skip everything you'd planned for the evening, go to bed at eight, and by Thursday you're roughly yourself.
Ask that patient how many migraine days they had, and the honest answer is one. Ask how many days migraine took from them, and it's two. The diary says one. The prior-auth file says one. The manager who watched Wednesday happen has formed a completely different impression, and that mismatch is where a lot of workplace friction and a lot of "but you seemed fine" starts.
Headache phase
Postdrome
Where you are
In bed, blinds down, phone face-down
At your desk, at school pickup, in a meeting
What you'd report
8/10, one-sided, photophobia, nausea
"Fine. Just tired."
What the app logs
Start, peak, medication, resolution
Nothing. The attack was closed overnight.
What MIDAS counts
One day missed
One day at half capacity, usually forgotten by the time the form gets filled in
What the neurologist sees
A headache-day count and a good triptan response
A gap
How a single attack splits across two phases. MIDAS scores are built from missed and reduced-productivity days, not from pain ratings.
Hours you can't document are hours you can't argue with
Every process that decides what happens to a migraine patient runs on records. A fifteen-minute neurology appointment. A prior-authorization file for a CGRP monoclonal. A short-term disability claim. An accommodation request that HR will read once and file.
A headache-day count that ends when the pain ends understates the condition in all four, and it understates it in the direction that costs people treatment. Nobody is going to approve an expensive preventive on the strength of days you didn't write down.
The clinical loss is sharper than the paperwork one. If a preventive is cutting your attack frequency but leaving postdrome length exactly where it was, that's usable information, and it's invisible in a log that shuts at pain resolution. The reverse case is just as real: an acute drug that reliably shortens the headache and reliably extends the fog is a genuine tradeoff, one plenty of patients notice and almost nobody can demonstrate.
Not everything after the headache is postdrome
Tracking is for the familiar after-phase: fatigue, fog, residual photophobia, neck stiffness, mood shift. New or persistent neurological symptoms are a different conversation. Weakness, speech difficulty, aura lasting longer than an hour, changes in vision that don't resolve, or a first-ever headache that's the worst of your life need prompt clinical evaluation, not a log entry.
What a log that doesn't close at 6 a.m. looks like
We built Postdrome because the tracking layer stops in the wrong place. Every app we tried closed the attack when the pain stopped, which means the most impairment-dense hours of a chronic patient's month were never in the data at all.
So the attack stays open. The after-phase gets its own timeline: fatigue, concentration, residual photophobia, neck stiffness, mood, each with hours attached, so a month of attacks produces both columns of the ledger instead of one. Aura Mode is there because the moments you most need to record something are the moments you can least stand to look at a screen. Everything stays on your device. It's one price, paid once, since a lifelong condition shouldn't arrive with a meter running.
None of that shortens a postdrome. What it produces is a record with the second column filled in, so your next appointment starts from the hours the condition actually took rather than a headache count that ended at six in the morning.
Keep the attack open after the pain stops. Postdrome logs the fatigue, fog, photophobia, and neck stiffness that your headache tracker closes the book on, in a form you can hand a neurologist. One price, paid once. Your data stays on your device.
We built Postdrome because of migraines in our lives, and because every app we tried failed the people we love in the same specific way: it stopped logging when the pain stopped. The design brief was narrow. Keep the attack open through the 24 to 72 hours that follow, make it usable when you can't tolerate a bright screen, keep the data on the device, and charge once instead of forever.
