Research Article: Fremanezumab for Episodic Migraine Prevention in Japanese Patients: Subgroup Analysis from Two International Trials
Introduction:
Episodic migraine (EM), defined as “< migraine or headache days per month with or without aura”, causes less headache-related disability, impairment in quality of life, and comorbidity than chronic migraine (CM). – However, EM is responsible for >% of the migraine cases, and progresses to CM in a small proportion of patients annually and, conversely, CM may switch back to EM.
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