Is There a Difference Between Chronic and Episodic Migraine?

The lower your frequency is in that chronic migraine territory the higher chances you are to revert back. About 30% or so of people with migraine will also experience aura which is defined as this more focused neurological phenomenon and is generally temporary. The criteria from the international headache societies say that the range of aura duration should be 5 to 60 minutes at a time.