A migraine diary is most useful when you can keep it going on difficult days. The Migraine Trust recommends a simple record of dates, duration, severity, symptoms and medication. Start with what you can manage.
Why most diaries fail
A long list of fields can be difficult to complete during an attack. Choose a minimal routine first, and add detail only when it helps you or your clinician answer a specific question. Missing details are normal; do not invent them afterwards.
The minimum useful log
Note the date and approximate start time. If you can, add when the attack ended and whether it limited normal activities. Severity, symptoms and possible factors can wait. Record medication use because clinicians may ask about days with medication, not just the number of doses. See what to track during an attack for a fuller checklist.
Building a gentle habit
Use the same short routine when an attack begins, then add details after it passes. Migrelle's quick log opens from the centre button and saves in a second tap; a pain score is optional. Its Daily Pulse check-in is optional too. Review your record with curiosity, because a pattern is not proof of cause. If tracking itself becomes stressful, make the routine smaller.
