The flattened, foggy, wrung-out day after a migraine has a name: the postdrome. It is a recognised phase of the attack rather than a personal failure to bounce back, and it is close to universal — in prospective diary research, the large majority of people reported at least one non-headache symptom after the pain resolved. It matters for a practical reason too: if you record your attacks as ending when the pain ends, you are systematically underreporting how long migraine actually takes from you.

What the Diary Studies Found

The clearest picture comes from an electronic diary study of the migraine postdrome, which tracked 120 people daily for three months and defined the postdrome as the time from resolution of troublesome headache to return to normal.

Findings worth knowing:

  • 81% reported at least one non-headache symptom in the postdrome.
  • The most frequent were tiredness and weariness, difficulty concentrating, and stiff neck — closely echoing the premonitory symptoms that precede attacks.
  • In 93% of attacks, people returned to normal within 24 hours of the pain resolving.
  • Many also described mild residual head discomfort — not the headache, but not nothing either.

A broader review of the migraine postdrome places this within the four-phase model of an attack. Our guide to the four phases of a migraine attack covers where it sits.

Why the 24-Hour Figure Is Reassuring

Most people underestimate how normal this is and overestimate how long it should last. The evidence says the great majority of postdromes resolve inside a day. If yours routinely runs longer — several days of fog after every attack — that is worth raising, because it is outside the typical pattern and may point to something else, such as sleep disruption, medication effects, or attack frequency high enough that you are never fully clear between attacks.

The Tracking Consequence

This is the part with a real downstream effect. If you log "migraine: 6 hours" because the pain lasted 6 hours, but you then lost the following day to fog and exhaustion, your record understates the burden by most of its actual weight.

That matters in two places:

  • At your appointment. Disability measures and treatment decisions turn on how much time migraine takes from you. Postdrome time is real disability time.
  • In judging treatments. A preventive that reduces postdrome severity but not attack count can look like a failure if you are only counting attacks.

When Post-Attack Symptoms Need Assessment

Seek prompt medical review if symptoms after a migraine include weakness, numbness, difficulty speaking, vision loss, or confusion that does not fully resolve — these are not typical postdrome features and need assessment to rule out other causes. Get urgent care if the "recovery" period involves a new severe headache, fever with neck stiffness, or symptoms following a head injury. Fog or fatigue persisting more than a few days after every attack deserves a conversation with your clinician.

This article is educational and is not a substitute for individual medical advice.

What to Track

One extra field changes the picture:

| Field | Why | |---|---| | Time pain resolved | Where most people stop recording | | Time you felt genuinely normal | The gap between these two is your postdrome | | Postdrome symptoms | Tiredness, concentration, stiff neck are the common three | | Hours of function lost after pain ended | The number that belongs in your disability total |

Do this for ten attacks and you will have a defensible figure for how long your attacks really last — usually meaningfully longer than the number you have been giving.

The attack duration calculator works out your complete timeline including postdrome, rather than pain alone. Tracking it continuously in Migraine Trail means the total arrives at your appointment already calculated, in a report your neurologist can use.

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