Chronic versus episodic migraine: The 15-day threshold does not adequately reflect substantial differences in disability across the full spectrum of headache frequency

CONCLUSION: Our data suggest that the use of a 15 headache day/month threshold to distinguish episodic and chronic migraine does not capture the burden of illness nor reflect the treatment needs of patients. These results have important implications for future refinements in the classification of migraine.PMID:34081791 | DOI:10.1111/head.14154

Source: Headache - June 3, 2021 Category: Neurology Authors: Ryotaro Ishii Todd J Schwedt Gina Dumkrieger Nim Lalvani Audrey Craven Peter J Goadsby Richard B Lipton Jes Olesen Stephen D Silberstein Mark J Burish David W Dodick Source Type: research