Keeping a headache diary for at least two months may help identify situations where headache/migraine occurs, and also help establish if there are any particular patterns in the frequency, duration, severity or type of symptoms.11
Triggers can include:
·     stress or decreased stress (eg ‘weekend’ migraines after the pressure of the working week is lifted)
·     hormonal changes (eg menstruation)
·     altered sleep patterns/jet lag
·     specific foods
·     dehydration/hunger
·     sensory stimuli (eg strong smells/light)
·     vigorous exercise.
Identifying and avoiding/managing potential triggers is often the best approach for a migraine sufferer. However, sometimes there is no obvious trigger, or there are several which can then be difficult to avoid collectively. Note that NICE warns: “Too much effort in identifying triggers can cause introspection and be counterproductive.â€