 [ Symptoms ] vertigo questions my grandmother is 85 and just got told she has vertigo she has these attacks everyday and sometimes twice a day my question is how do these attacks happen when she is not moving she has had 2 attacks today in an hour and she has not moved at all in that time is this normal and what can we do [ Disease ] a trigger is a factor that can set off a migraine in people who are predisposed to migraines some common triggers include emotional stress sensitivity to specific chemicals and preservatives in foods caffeine changing weather conditions changes in female hormones tension excessive fatigue skipped meals or changes in normal sleep patterns