If you live with migraine, you have probably wondered whether a rough night, a skipped lunch, or a shift in the weather had something to do with your last attack. This is a calm look at the trigger categories people most often track, and at an honest truth that sits underneath all of them: a pattern you notice in your own life is a lead worth raising with a clinician, not a diagnosis or a verdict. Not medical advice — talk to your clinician.
The word "trigger" makes it sound like a switch: do this, get an attack. Real life is messier. Most things people call triggers are better understood as associations — factors that show up more often around attacks for some people, some of the time. The same night of poor sleep might sit next to an attack one week and nothing the next.
That gap matters because correlation is not causation. Noticing that migraine days tend to follow late nights tells you two things happened together; it does not prove one caused the other, and it does not rule out a third factor sitting behind both. Natural triggers are also far less predictable than the ones studied in a lab, and they vary a lot from person to person.
So the useful goal is not to "find the cause" or to promise yourself an attack-free month. It is to gather honest observations over time and bring the strongest ones to a clinician who can weigh them with everything else they know about you.
Sleep is one of the most consistently reported categories, and it cuts both ways: too little and too much can each show up around attacks. That is not a quirk — both short and long sleep are commonly reported around attacks, and sleep and migraine tend to be closely tangled.
When people track sleep, they usually log more than just hours. Small, specific notes tend to be more useful later than a vague "slept badly."
Stress is one of the most commonly reported trigger categories, but the pattern many people track is subtler than "stress causes attacks." A recognised phenomenon is the let-down: attacks that arrive as stress falls away rather than at the peak — the first calm morning of a holiday, the day after a deadline, the start of a weekend.
Because the timing lags, this one is easy to miss in the moment and easier to spot in a log. Recording the shape of a stressful stretch, not just the hardest day, tends to make the pattern legible.
This is also a category where the honest framing really matters: seeing let-down attacks in your own data is a conversation-starter for a clinician, not a reason to fear rest.
Missing or delaying meals is one of the more strongly and consistently reported trigger categories, and it often travels with dehydration and low fluids across a busy day. Both are things people can note quickly without turning eating into a source of anxiety.
The aim in a journal is simply to record what happened — a long gap between meals, a skipped breakfast, a day of little water — so that any real personal pattern can surface over dozens of attacks rather than being guessed at from one bad afternoon.
For many people who menstruate, attacks cluster around a particular window of the cycle rather than falling at random. Migraine tied to the menstrual period is a recognised pattern for many who menstruate, and the leading explanation involves the natural drop in estrogen before a period.
That said, the science here is still being firmed up: a 2023 appraisal described the underlying evidence as limited and in need of further validation. So the honest move is to name the menstrual-window association gently — a pattern worth tracking and discussing — without treating the mechanism as settled fact.
Logging cycle timing alongside attacks is one of the clearest examples of a personal pattern that a clinician can actually use, especially when the counts are there to back it up.
Alcohol is a frequently reported trigger category, and it is one people can track straightforwardly: whether a drink was involved, roughly how much, and what kind. As with everything here, its presence around an attack is an observation, not a rule that applies to everyone.
Weather and barometric pressure sit at the opposite end of the confidence scale. A systematic review pooling 14 studies and 2,696 participants found some evidence linking falling or fluctuating pressure to attack frequency, but the picture for severity was unclear, there was no clear link to how long attacks lasted, and study methods varied widely. In short: real for some people, genuinely mixed in the evidence, and worth hedging hard. Weather is also the one category you cannot change — which is exactly why it belongs in the "understand and discuss" pile, not a "fix it yourself" one.
A single striking day proves very little. What earns a clinician's attention is a pattern that holds up across many attacks, with the raw counts visible so it can be sanity-checked rather than taken on faith.
This is the job Migraine Map is built for. It is a personal attack journal: you capture attacks and note suspected triggers, and it shows you honest correlations — how often a category lined up with your attacks, with a confidence label and the underlying counts — instead of a fake prediction or a tidy percentage promise. It deliberately holds back from naming a pattern until there are enough logged attacks to say anything meaningful, and it always frames what it shows as association, not cause.
The output is not an answer; it is a better question. "Across my recent attacks, days after poor sleep lined up more often — is that worth exploring?" is the kind of thing you can bring to an appointment, where it can be weighed alongside a proper history and examination.
No — and any app or article that promises to eliminate, prevent, or predict migraines is over-promising. Tracking is a way to notice personal patterns and gather honest observations over time. What you find is information to discuss with a clinician, not a treatment or a cure.
Not on its own. A trigger appearing near your attacks is a correlation — the two happened together. Correlation is not causation: something else could be driving both, or the timing could be coincidence. That is why a personal pattern is best treated as a lead to raise with a clinician rather than a proven cause.
Because both directions are commonly reported around attacks. Short nights and long lie-ins can each show up in people's logs, and sleep and migraine tend to be closely tangled. Tracking duration, timing and quality separately helps a real pattern stand out.
It is one of the least certain categories. A review of 14 studies and 2,696 participants found some link between falling or fluctuating barometric pressure and how often attacks occur, but the evidence on severity and duration was unclear and methods varied a lot. It is real for some people and genuinely mixed in the research, so it is worth tracking lightly and without strong expectations.
More than a handful. A single dramatic day proves very little; a pattern that holds across many attacks, with the counts visible, is far more trustworthy. Migraine Map deliberately withholds naming a trigger until there are enough logged attacks to say something meaningful — and even then it labels the finding as association, not cause.