Does 15 migraine days a month mean I have chronic migraine?

Not on its own. Chronic migraine (ICHD-3) is 15 or more headache days a month for more than three months, of which at least 8 have migraine features — a sustained pattern, not a single month. Only a clinician can assess it. A dated record helps that conversation; it isn't a diagnosis.

Why track migraine days rather than just remembering them?

Because frequency is hard to recall accurately, and it's the thing clinicians reason about. A dated count over several months shows whether your migraine days are steady, rising or easing — and lets you record acute-medication days alongside them, which is useful context.

What 15 migraine days a month can mean

Having 15 migraine days in a month works out to roughly 180 migraine days across a year. That meets the frequency threshold that clinicians use to describe chronic migraine. Under the ICHD-3 definition, chronic migraine is 15 or more headache days a month for more than three months, of which at least 8 have migraine features. Reaching this count for one month isn't the same as having chronic migraine — the definition is about a sustained pattern, and only a clinician can make that assessment.

Where 15 days a month sits

Migraine frequency is usually described as headache or migraine days per month. Episodic migraine means fewer than 15 headache days a month; chronic migraine is defined by 15 or more. At 15 days a month — about 180 a year — you're at the frequency threshold used to describe chronic migraine. The number itself matters less than whether it's steady, rising or falling, which is exactly what a month-by-month count shows.

What this frequency means in practice

At 15 or more days a month, an accurate, dated record becomes genuinely important, because the chronic-migraine picture is defined by frequency over time. It's also the range where acute-medication use matters most: overusing pain-relief medication is associated with medication-overuse headache, and the two can feed into each other. Recording migraine days and medication days side by side is informational context for a clinician — not a self-diagnosis.

Talking to a clinician about it

If your migraine days are reaching this level, that's a clear reason to speak to a GP or neurologist. Bringing a dated record of your migraine days, symptoms and acute-medication use gives that conversation something concrete to start from.

Temple counts your migraine days month by month — 15 days or 180 a year becomes a clear, dated pattern you can bring to your next appointment, not a number reconstructed from memory.

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Common questions

Does 15 migraine days a month mean I have chronic migraine?: Not on its own. Chronic migraine (ICHD-3) is 15 or more headache days a month for more than three months, of which at least 8 have migraine features — a sustained pattern, not a single month. Only a clinician can assess it. A dated record helps that conversation; it isn't a diagnosis.
Why track migraine days rather than just remembering them?: Because frequency is hard to recall accurately, and it's the thing clinicians reason about. A dated count over several months shows whether your migraine days are steady, rising or easing — and lets you record acute-medication days alongside them, which is useful context.