Migraine evolution: Clinical trajectories and chronification

Though the two major migraine subtypes commonly mentioned are migraine with or without aura, migraine can also be divided into episodic or chronic sub-forms depending on the number of headache days per month.¹ For a single patient, migraine can evolve from episodic to chronic, or conversely, revert from chronic to episodic and even complete remission of symptoms.¹ These tr