Migraine and Sleep: What the Evidence Actually Supports
Sleep disruption and migraine travel together. Which direction the arrow points is less settled than most advice implies.
The association is real
People with migraine report more insomnia, and short or disrupted sleep is one of the most commonly reported attack triggers. That much is consistent across studies.
The direction is not settled
Three explanations fit the same data:
- Poor sleep triggers attacks.
- Attacks — and the anticipation of them — disrupt sleep.
- Both are driven by shared hypothalamic circuitry, and neither causes the other.
The prodrome complicates it further. Yawning, drowsiness and altered sleep can begin up to 24 hours before head pain, so a bad night before an attack may be the attack starting rather than the thing that caused it.
What is worth doing anyway
Regular sleep and wake times, including at weekends, are supported for people whose attacks cluster after schedule changes. That recommendation survives the causal uncertainty: it is low cost and the association is strong enough to act on.
What is not supported
That fixing sleep will resolve migraine. Presenting it that way puts the responsibility on the patient for a neurological condition, and it does not hold up.