Headache triggers are things that can set off a headache in some people.
Triggers vary from headache to headache and from person to person.
But over the years, headache sufferers and healthcare professionals have compiled a long list of things that can trigger a headache. For example, many people get headaches as a reaction to certain foods or beverages, others when they miss a meal or get too much or too little sleep. Some people get headaches in response to things in the environment, including high altitudes and changes in barometric pressure. Many women get migraines or other types of headaches during their menstrual cycle. You can start by asking yourself if there are any things or situations that seem to be associated with your headaches.