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Log headache days, migraine-feature days (your consistent definition), and acute medication days across a 7–31 day window. The tool scales counts to a 30-day equivalent so you can compare short diaries to common monthly benchmarks, then applies teaching-only snapshots for high-frequency episodic and chronic migraine day-count themes plus a simplified medication-overuse discussion flag. This is not ICHD-3 coding, not drug-class MOH rules, and not emergency triage. See also medical & health calculators.
Last updated: April 20, 2026
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Count any day you took acute meds specifically for this headache problem (Rx or OTC).
Headache d / 30
6
Migraine d / 30
4
Acute Rx/OTC d / 30
5
Headache-day band (teaching)
Moderate episodic headache-day burden
Moderate episodic burden: headache days are in a mid range per 30-day equivalent—useful interval to review lifestyle factors and acute medication use with a clinician.
Thunderclap onset, fever, stiff neck, focal neurologic signs, or new worst headache = emergency evaluation, not frequency math.
Short windows scale to monthly equivalents so patients who only tracked one pay period still get orientation numbers for clinic intake forms.
Aligns with menstrual-linked migraine tracking or insurance prior-authorization diary templates that use calendar months.
Separates total headache burden from days you label as migraine phenotype—useful when tension-type days coexist.
Mirrors the numeric half of common chronic migraine teaching (≥15 headache days and ≥8 migraine days per month) without proving three-month persistence.
Highlights when migraine-feature days are high on a 30-day scale but chronic headache-day thresholds are not met—often where prevention conversations start.
Counts how often acute therapies are used for headache, prompting review of combination products, caffeine, and triptan/opioid/butalbital-specific limits with professionals.
Default demo: 30-day window with 6 headache days, 4 migraine-feature days, 5 acute medication days → moderate episodic headache-day band on the 30-day equivalent with contextual summary in the live card.
Preventive therapy decisions, disability scoring, and acute medication limits all depend on how often attacks occur—not only peak pain intensity. A simple normalized snapshot complements detailed diaries and clinic questionnaires.
Each count you enter is divided by the window length and multiplied by 30 to produce per-30-day equivalents. Headache-day burden is bucketed into low, moderate, high-frequency, or very high bands for teaching language. Separately, the page checks whether the scaled pair (headache days, migraine days) crosses simplified chronic migraine numeric themes or an HFEM-style pattern. Acute medication days use another scaled threshold only to prompt conversation—not to diagnose medication overuse headache.
Pair frequency with triggers using our migraine trigger score calculator.
Get a Custom Calculator for Your Platform30-day equivalents stay at 16 / 10 / 14, crossing the simplified chronic migraine day-count snapshot and raising both acute-use and preventive-pathway discussion themes—still not a formal diagnosis without duration and phenotype documentation.
Share it for neurology and primary care education
Suggested hashtags: #Migraine #Headache #Neurology #MedEd #Calculator