Migraine Diary: What 90 Days of Tracking Reveals About Your Triggers

Three Months Ago You Could Not Have Named a Single Trigger

You have heard the list. Red wine. Aged cheese. Stress. Bright lights. Hormones. Weather changes. The triggers list for migraines is long, and when you are in the middle of an attack, it all feels equally plausible and equally useless.

The problem is not that triggers do not exist. They do. The problem is that most people try to identify their triggers from memory, and memory is terrible for this. You had a migraine on Thursday, so you think back to what was different. You had pasta on Wednesday. Was it the pasta? You were stressed at work. Was it the stress? You slept in an extra hour. Could that have done it?

Without a log, you are guessing. And guessing at migraine triggers tends to lead to increasingly restricted lives without actually reducing attacks.

Ninety days of a migraine diary changes that. Here is why it takes that long, and here is exactly how to do it.

Why 90 Days Is the Right Frame

Migraines are not daily events for most people, which means you need a longer observation window than you would for something that happens every day. If you average two migraines per month, ninety days gives you six attacks to compare against each other. That is enough to start seeing real patterns rather than coincidences.

It also takes time to collect data across different contexts. You may have weeks where you travel. Weeks where your cycle is in a different phase. Weeks where work is unusually intense and weeks where it is quiet. Three months captures enough variation to show you which factors are consistently present before attacks and which are just noise.

Thirty days is usually too short. Sixty can work. Ninety gives you a much cleaner picture.

What to Track Every Day (Not Just On Attack Days)

This is the most important thing to understand about keeping a migraine diary: you track every day, not only when you have an attack. The days before and after an attack are just as revealing as the attack itself.

Daily Log Fields

• Sleep hours: Actual hours, not intended hours. Both too little and too much sleep are documented migraine triggers for many people.
• Sleep quality (1-5): Fragmented sleep tells a different story than short but solid sleep.
• Wake time: Sleeping in on weekends is a known trigger called the “weekend migraine.” Log your actual wake time.
• Hydration: Rough estimate: under 4 cups / 4-6 cups / 6+ cups. Dehydration is one of the most consistently reported dietary triggers.
• Meals skipped (Y/N): Skipping meals and the blood sugar drop that follows is a common trigger. Note which meal.
• Alcohol (Y/N and type): Red wine and beer tend to be higher risk for migraine. Note zero, one, or more drinks.
• Caffeine: Both caffeine and caffeine withdrawal can trigger attacks. Log your intake and note if today was lower than usual.
• Stress level (1-10): Rate the day overall. Note any specific stressors.
• Screen time (hours): Prolonged screen exposure, especially in low light, is relevant for many people.
• Physical activity: What you did, how long. Intense exercise can trigger some people and help others.
• Weather note: High or low pressure, major temperature shifts. You do not need a barometer. “Stormy” or “front moving in” is enough.
• Menstrual cycle day (if applicable): Hormonal migraines are among the most common and most treatable patterns.
• Neck or shoulder tension (Y/N): Many people notice tension building in the days before an attack.

On Attack Days, Add These Fields

• Attack start time: When you first noticed something was wrong.
• Prodrome symptoms: In the hours before, did you have mood changes, food cravings, yawning, neck stiffness, or visual disturbances?
• Aura (Y/N): Visual, sensory, or speech disturbances in the 20-60 minutes before the headache.
• Pain location: One side, both sides, behind the eye, at the base of the skull.
• Pain severity (1-10): At its worst during the attack.
• Associated symptoms: Nausea, vomiting, light sensitivity, sound sensitivity, smell sensitivity.
• Medications taken: Name, dose, time taken after onset. Was it effective?
• Attack duration: From onset to the point where you could function again.
• Postdrome (Y/N): The “migraine hangover.” Fatigue, cognitive fog, mood flatness in the day after.

Week-by-Week: What 90 Days Reveals

Days 1-30: Building Baseline

The first month, you are primarily learning to log consistently. Do not try to draw conclusions yet. Some days you will miss entries. That is fine. Log what you can and keep going. By the end of the month, you will have a baseline picture of your average week: your typical sleep, your typical stress load, your typical diet patterns.

Days 31-60: Patterns Start Emerging

By the second month, if you have had any attacks, you can start looking at what the 24 to 48 hours before each one looked like. Were you less hydrated? Did you skip a meal? Was there a weather shift? Was it a specific day in your cycle? Start looking for one recurring factor before each attack, not all of them. One is enough to start with.

Days 61-90: Confirmation and Clarity

By the third month, you are looking for confirmation. If sleep disruption appeared before attacks in months one and two, does it appear again in month three? If weekend attacks are a pattern, do they continue? Three months of data lets you distinguish between a genuine trigger pattern and a coincidence.

Triggers That Are Often Cumulative (Not Single-Cause)

One of the most useful insights from extended migraine tracking is discovering that most attacks do not have a single trigger. They have a threshold. Your brain has a certain amount of tolerance for stress, disrupted sleep, dehydration, and hormonal fluctuation. When enough of those factors stack up in a short window, the threshold is crossed and an attack follows.

This means that on a day when you sleep well, stay hydrated, and are not near a hormonal shift, you might tolerate a glass of wine without consequence. But on a day when you slept poorly, skipped breakfast, and are in your pre-menstrual window, that same glass of wine tips you over.

The wine did not cause the migraine. The cumulative load did. And you will only see this if you are tracking all the variables, not just the one you had immediately before the attack.

Bringing Your Diary to a Headache Specialist

If you have ever described your migraines to a neurologist or headache specialist and felt like you could not adequately convey what your pattern looks like, a ninety-day log changes that conversation completely. You can show them frequency, severity trends, medication response data, and suspected triggers. That is far more useful than “I get bad headaches about twice a month, I think.”

Frequency data specifically matters for treatment decisions. There are differences in how chronic migraine (fifteen or more headache days per month) and episodic migraine are managed. Your diary provides objective data for that classification.

Medication overuse headache is another area where diary data is critical. If you are taking acute medications more than ten to fifteen days per month, that itself can drive a cycle of increased headache frequency. Logging your medication use alongside your attacks can help you and your provider spot this pattern before it becomes harder to break.

For more on managing migraines and the tools available, visit Clarity DTX’s migraine page.

A Dedicated App Makes This Sustainable

A paper diary works. A spreadsheet works. But what makes ninety days of daily logging sustainable is low friction. The less time and effort each entry takes, the more likely you are to keep going on a bad week or during an attack recovery.

The Migraine Tracker app is built for this specific purpose. It gives you structured daily logging with the right fields already built in, tracks your attack history over time, and surfaces patterns in your data so you can see what ninety days of entries reveal. You can bring the reports directly to appointments.

You can also access it through the Clarity DTX migraine app.

What You Are Building Toward

Ninety days from now, you will know things about your migraines that you do not know today. You will know which factors seem to stack up before attacks. You will know whether your sleep is a bigger driver than your diet. You will know whether your attacks cluster around hormonal patterns or weather patterns or both. You will know how long your postdrome typically lasts and what it does to the next day.

That knowledge does not cure migraines. But it gives you and your treatment team something real to work with. And after years of attacks that felt random and impossible to prevent, a map of your own patterns is a meaningful thing to have.

Start your log today. You do not need everything set up perfectly. Pick three fields: sleep, hydration, and stress. Log those for a week. Add more when the habit feels solid. Your ninety-day picture starts from whenever you begin.

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This content is for informational purposes only and does not replace professional medical advice. Always consult your healthcare provider before making changes to your treatment plan.