The doctor asks: “How often do you have headaches?” And suddenly you can’t remember anything. Three times a month? More like weekly? Was the pain yesterday or last week? The memory of pain is unreliable, especially when details matter. A headache diary solves this problem with little effort.
Why Memory Alone Isn’t Enough
Pain remains as a feeling in memory, while numbers and patterns fade. When estimating retrospectively, people often mention the worst attack and leave out the lighter days. However, for diagnosis, patterns are crucial: how many days, how long, with what accompanying symptoms.
The headache classification ICHD-3 works with exactly these details. Whether it is a migraine, a tension-type headache, or both, depends on duration, pain characteristics, and accompanying symptoms. A diary provides this information without gaps. This often saves an appointment in practice, as the doctor can arrive at an assessment more quickly.
What to Include in the Diary
Less is more. An entry should take no more than a minute; otherwise, you won’t keep it up. The following details have proven effective:
- Date and approximate time of onset
- Duration until the pain subsides
- Intensity on a scale from 0 to 10
- Location and type: unilateral or bilateral, throbbing or pressing
- Accompanying symptoms such as nausea, sensitivity to light and noise, or flickering in front of the eyes
- What you took and whether it helped, including the name of the medication and the time
- Possible triggers: lack of sleep, missed meals, stress, weather changes, and for women, the cycle day
Days without symptoms should also be included. They show how the attacks are distributed throughout the month.
Paper, Template, or App?
More important than the medium is the consistency. If you already reach for your phone daily, an app is a good choice. If you prefer writing, use a notebook or a template. The German Migraine and Headache Society (DMKG) provides a printable headache diary on its website. Practices often provide such templates as well.
When using apps, check who developed them and what happens to your health data. Health data is sensitive. A simple note-taking table on your phone serves the purpose just as well.
How to Fill It Out Sustainably
Most people fail not because of the content, but because they forget. Two tricks help. Place the notebook where you will see it in the evening, such as next to your toothbrush or on your nightstand. And record the attack as soon as it’s over, not just on the weekend.
Three months is a sensible timeframe. After this period, you and your doctor can recognize patterns that might remain hidden after just two weeks, such as a rhythm around the cycle or a clustering after weekends with long sleeping in.
What the Diary Reveals
When analyzing, you see not just numbers, but often a story. Here are a few examples of questions you can answer:
- On how many days in the month do headaches occur, and how many of those are severe?
- Are there two different forms, such as dull, constant pressure on some days and throbbing attacks with nausea on others? Then both types of headaches occur, and each is treated differently.
- Does an attack announce itself, for example, through cravings, yawning, or an aura?
- Does the acute medication work if you take it early enough?
- Does a trigger repeat? One coffee too few doesn’t explain a migraine, but three times the same connection might indicate a clue.
Be cautious with interpretations: a suspected trigger is not automatically the cause. Some people crave sweets because the attack is already starting and then mistakenly think that the chocolate is the trigger. If you are unsure, discuss the observations with your doctor instead of eliminating foods and habits on a whim.
Keep an Eye on Painkillers
One point deserves its own column: the days on which you took painkillers. Frequent use can actually worsen headaches. According to ICHD-3 criteria, this is considered a risk if simple painkillers are taken on 15 or more days a month, and for triptans and combination medications, on 10 or more days, each over more than three months. In the diary, you can see such clusters in black and white, often for the first time.
If you approach this value, talk to your doctor. Do not stop prescribed medications on your own. Which medications in what amounts are appropriate is determined by the doctor, not a blog article.
When to Bring the Diary to a Doctor’s Appointment
Bring it along as soon as headaches become more frequent, restrict your daily life, or you find yourself reaching for painkillers more often. An evaluated overview on a single sheet also helps: number of headache days per month, typical duration, effective medications. Especially with a migraine with aura, the sequence and duration of symptoms are valuable for classification.
When You Should See a Doctor Immediately
A diary does not replace emergency care. Call emergency services at 112 or seek medical help immediately if:
- a headache comes on suddenly and is more intense than ever before
- weakness, speech disturbances, or vision problems occur suddenly
- fever and neck stiffness develop
- the pain starts after a fall or blow to the head
- headaches steadily worsen over weeks or occur for the first time after the age of 50
In these cases, do not wait until an entry is completed.
Frequently Asked Questions
How long should I keep the diary?
At least three months, longer for rare attacks or cycle-dependent complaints. If you start a treatment, continue keeping it to assess the effect.
Do I have to record every headache, even mild ones?
Yes, if possible. Mild days show whether a chronic headache mixes with individual attacks. A mark for “mild, no medication” is sufficient.
Can a diary worsen symptoms?
For some, observing can become a constant worry. If you notice that you are just waiting for the next pain, discuss this in practice. Often, it is enough to just mark headache days.
Read Also
- Tension-Type Headache or Migraine: How to Recognize the Difference
- Migraine with Aura: What It Is and What Helps
- Stress Management and Burnout Prevention: Ways to Improve Well-Being in Daily Life
This article is for informational purposes only and does not replace medical advice.
Sources
- Headache Classification Committee of the International Headache Society (IHS): The International Classification of Headache Disorders, 3rd edition (ICHD-3). Cephalalgia 2018;38(1):1–211.
- DGN and DMKG: Guidelines for the Treatment of Migraine Attacks and Prophylaxis of Migraine (AWMF-Register No. 030/057).