Answers
What's the best way to track migraine triggers?
The best way is a diary that captures every attack immediately, records the surrounding context — weather, sleep, stress, food, hormones — automatically, and keeps going until you have ten to fifteen attacks to compare. Immediacy, context, and volume are what turn a diary into evidence.
Why trigger-hunting usually fails
Most people try to find their triggers by thinking back after an attack: "What did I do differently yesterday?" That approach has three built-in flaws.
- Memory is a poor witness. After a day of pain, nausea, and light sensitivity, recalling yesterday's meals, sleep quality, and weather accurately is close to impossible. Details reconstructed later drift toward whatever theory you already hold.
- Prodrome masquerades as cause. A migraine attack often begins hours before the pain, with a prodrome phase that can include cravings, yawning, and mood shifts. If you crave chocolate during prodrome and eat it, chocolate looks like the trigger — when it was actually an early symptom. The American Migraine Foundation notes this trap explicitly in its discussion of common triggers.
- Triggers stack. Research suggests most attacks aren't caused by a single villain but by several factors piling up until you cross your personal threshold: a short night, plus a skipped lunch, plus a falling barometer. Looking for the one culprit means missing the combination.
The three ingredients of tracking that works
1. Immediacy. Log the attack when it starts, not the next evening. The timestamp anchors everything else — an attack recorded a day late can no longer be lined up against last night's sleep or this morning's pressure drop. This is why the logging step must be trivially easy: if it takes a form with twelve fields, you won't do it mid-attack, and the diary quietly dies. Dim was designed around this constraint — an attack is logged in three taps, on a near-black screen, and every detail can wait until you feel human again.
2. Context. An attack entry by itself says "I had a migraine on Tuesday." Useful, but patterns live in what surrounded the attack: how you slept, what the weather and barometric pressure were doing, where you were in your cycle, how stressful the week was. Some of this only you can note — but a surprising amount can be captured automatically. Dim attaches local weather, temperature, pressure and its trend, and last night's sleep from Apple Health to every entry without you lifting a finger.
3. Volume. One attack after a thunderstorm proves nothing; eight out of ten attacks landing on pressure-drop days is a pattern. Plan to collect ten to fifteen attacks before drawing conclusions. For someone with two attacks a month, that's several months of diary keeping — which is exactly why the diary has to be effortless enough to survive that long.
Every field you must fill in by hand is a chance for the diary to fail on a bad day. Every field captured automatically is one that's still accurate at 3 a.m. mid-attack. Design your tracking so the worst version of you can still do it.
How to run the experiment on yourself
- Pick your tool and stick with it. App or paper, the diary you keep beats the diary you abandon. If screens hurt during attacks, use a dark, glare-free app or jot a timestamp on paper and transfer it later.
- Log every attack, even the small ones. Mild attacks carry the same pattern information as severe ones, and skipping them biases your data.
- Track the boring days too. Knowing that you slept five hours and didn't get an attack matters — a suspected trigger that fires only sometimes is probably part of a stack, not a standalone cause.
- Review monthly, not daily. Look for factors that keep showing up in the 24–48 hours before attacks. Be as willing to acquit a suspect as to convict one — crossing "red wine" off your worry list is a genuine win.
- Bring the results to your doctor. A pattern you found is a hypothesis worth discussing, not a diagnosis. A clinician can help separate real triggers from coincidence and fold them into a plan.
What you'll actually find
Honest expectations help. Some people discover one dominant, avoidable trigger and cut their attack count meaningfully. Many find a threshold picture instead: no single cause, but a clear set of conditions — short sleep, weather swings, certain cycle days — under which attacks become far more likely. That's still valuable: it tells you when to protect the basics, keep acute medication within reach, and lower your expectations for the day. And some find their attacks are essentially unpredictable, which at least ends years of self-blame over cheese and chocolate.
Quick answers
Should I track triggers with an app or on paper?
Whichever you'll keep using. Apps win at capturing context automatically — weather, pressure, sleep — and at turning months of entries into a readable report. Paper wins at simplicity. The method above works with either.
How long does it take to identify a migraine trigger?
Long enough to log roughly ten to fifteen attacks with context — usually one to three months for most people. Patterns claimed from two or three attacks are mostly noise.
What are the most common migraine triggers?
Frequently reported ones include stress, sleep changes, hormonal shifts, weather and pressure changes, skipped meals, dehydration, and alcohol. But lists describe populations — your diary describes you.
Let the diary do the hard part
Dim logs an attack in three taps and attaches weather, barometric pressure, and last night's sleep automatically — so your trigger data collects itself.
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