Merck Frosst
Patients and Caregivers

Headache... or Migraine?

Migraine Triggers

Stop the migraine BEFORE it starts.

Be aware of your migraine triggers.

TRIGGERS are those things that are believed to bring on or provoke migraine attacks in some people. Avoiding your personal triggers may help you prevent migraine attacks or, at the very least, reduce the number or severity of attacks you get.

Selected Potential Provoking Factors of Migraine (Triggers)

Foods and drinks

  • Aged cheeses
  • Certain fruits & vegetables
  • Fermented, pickled foods
  • Meats with nitrites
  • Drinks containing alcohol or caffeine
  • Foods high in concentrated sugar or artificial sweeteners (aspartame, saccharin)
  • Dairy or yeast products
  • Monosodium glutamate (MSG)
  • Sulfites


Changes in the weather

Changes in behaviour

  • Sleeping more or less than usual
  • Skipped or delayed meals
  • Changes in diet
  • Strong emotions or stress


Hormonal cycles or changes

  • Menstruation
  • Hormonal replacement
  • Oral contraceptives
  • Pregnancy
  • Pre-menopause
  • Absence of menstruation


Exposure to:

  • Scintillating, flashing, bright or fluorescent lighting
  • Strong odors (perfume, paint, cleaning solutions, exhaust fumes)
  • Smoke


Although different people are sensitive to different triggers, the items listed here are among the ones likely to provoke a migraine attack.  Check the triggers that belong on YOUR personal list.

This site is for residents of Canada. / This site was updated on October 26, 2011.