THE ARITHMETIC NOBODY ELSE IS DOING
Four headache days a month is where prevention starts to earn its place. Fifteen or more meets the formal definition of chronic headache. The second count is medication days. Combination pain relievers and triptans start driving medication overuse headache at around ten days a month.
Not how bad they were. How many. That is the number that decides whether this is a nuisance or something quietly taking your job. It is almost never the number anyone asks for.

Does how often I get headaches matter more than how bad they are?
How bad it is decides how bad today is. How often it comes decides what your treatment should be. Every real fork in headache care is a decision about days per month, not a number out of ten. Should you start prevention? Do you meet the definition of chronic headache? Has the medication become part of the problem?
This is also why the question gets skipped. How bad it is, is what you offer when someone asks how you are. How often has to be counted. And counting needs somebody to have asked you to start two weeks ago.
1 TO 3 DAYS A MONTH
- Episodic, and worth keeping that way.
- The goal is to treat it well when it happens. Avoid the pattern that turns episodic headache into chronic headache.
- How often you use an abortive (a drug to stop an attack) matters as much as how well it works — the overuse threshold.
4 TO 8 DAYS A MONTH
- This is the threshold where prevention starts to earn its place.
- Around four days a month is where most guidance starts to weigh preventive treatment, instead of treating each attack as it comes.
- If nobody has talked about prevention with you at this rate, that is a gap. It is not a judgment call that went the other way.
9 TO 14 DAYS A MONTH
- You are close to the chronic threshold.
- This is also the range where medication overuse becomes a real risk. The treatment that helps each attack may be keeping the pattern going.
- The hard question: how many days a month do you take something for it? Ten or more of certain drug classes is enough to drive the cycle.
15 OR MORE DAYS A MONTH
- This meets the formal definition of chronic headache. It is a category, not a figure of speech.
- It changes what is worth trying. This is the group most likely to have been managed with abortives alone for years.
- Preventive options and interventional nerve blocks both become relevant at this rate. So does unwinding any overuse — carefully, and with cover.
How many days a month can I take headache medicine?
How many days a month do you take something for it? Not how much on a bad day — how many days. Combination pain relievers and triptans start driving medication overuse headache at around ten days a month. Simple pain relievers start at around fifteen. The lower limit on the combination products surprises nearly everyone, because they are the ones sold as the gentler option.
If both numbers are high, they are not two problems. They are one loop. It has to be unwound from both ends at once. How that is done.
Why am I having headaches so often?
A migraine brain handles change poorly. How often attacks come tracks how much change it has to absorb. Two of those inputs are metabolic. Unstable blood sugar widens the swings the brain has to cushion. Chronic metabolic inflammation lowers the point at which a swing tips into an attack. Neither shows on a scan. Neither is touched by an abortive.
The third input is your calendar. Rotating shifts. Meals skipped because the shift did not allow one. Sleep that moves by four hours on the weekend. The pulling away from people that follows canceling on them again and again. Each of those is a change the brain has to absorb. Together they usually explain more of the monthly count than any single trigger food. That is why the plan includes bloodwork and a look at your week.
Questions about frequency
How many headache days a month is too many?
Four is where prevention is usually worth talking about. Fifteen or more meets the definition of chronic headache. Between those, the second count — medication days — decides most of the plan. Two weeks of a diary answers both.
What counts as a headache day?
Any day with head pain. That includes days you treated early and it never fully set in. People undercount again and again by leaving out the days the medicine worked. Those are exactly the days that matter most.
Do I need a scan to work this out?
Almost never. Headache days and medication days come from your history, not a scan. A normal scan does not change either number. When a scan is actually indicated.
Is prevention just another daily medication?
Preventive treatment is a category, not one drug. It includes interventional options such as nerve blocks, as well as pills and injected medication. What fits depends on how often the headaches come, what has already failed and what else you are managing. What a first visit covers.
Is it normal to have headaches every month?
One to three headache days a month is episodic. The goal is to keep it that way. Treat each attack well and avoid the pattern that turns episodic headache into chronic headache. At around four days a month, preventive treatment starts to earn its place. If nobody has raised prevention with you at that rate, that is a gap in your care.
When do frequent headaches become chronic?
Fifteen or more headache days a month meets the formal definition of chronic headache. It is a category, not a figure of speech. It changes what is worth trying. People in this group are the most likely to have been managed with abortives alone for years. Preventive options, interventional nerve blocks and careful unwinding of any medication overuse all become relevant.
Why does a headache plan include bloodwork?
Two of the inputs that drive how often headaches come are metabolic. Unstable blood sugar widens the swings a migraine brain has to cushion. Chronic metabolic inflammation lowers the point at which a swing tips into an attack. Neither shows on a scan. Neither is touched by an abortive. Bloodwork, along with a look at your sleep, meals and shifts, is how the plan finds them.
If the count surprised you
- When the medication stopped lasting
- What to bring
- What happens at a headache clinic
- Do I need a scan?
- Headache specialist or neurologist?
- When to go to the ER
Bring two weeks of a diary
It is worth more than any scan you can bring us, because it answers the two questions that decide the treatment. Start counting today and book for two weeks out.
12174 Natural Bridge Rd, Suite 304
St. Louis, MO 63044
Next to DePaul Hospital, off the I‑270 and I‑70 junction, west of the airport.
Sources
- GBD 2016 Headache Collaborators. Global, regional, and national burden of migraine and tension-type headache, 1990-2016: a systematic analysis for the Global Burden of Disease Study 2016. The Lancet. Neurology, 2018. PubMed 30353868
- Headache Classification Committee of the International Headache Society (IHS) The International Classification of Headache Disorders, 3rd edition. Cephalalgia : an international journal of headache, 2018. PubMed 29368949
- Lanteri-Minet M et al. Effectiveness of onabotulinumtoxinA (BOTOX®) for the preventive treatment of chronic migraine: A meta-analysis on 10 years of real-world data. Cephalalgia : an international journal of headache, 2022. PubMed 36081276
- Olesen J. The International Classification of Headache Disorders: History and future perspectives. Cephalalgia : an international journal of headache, 2024. PubMed 38166472