Ineffective acute treatment of episodic migraine is associated with new-onset chronic migraine

Conclusion: Inadequate acute treatment efficacy was associated with an increased risk of new-onset CM over the course of 1 year. Improving acute treatment outcomes might prevent new-onset CM, although reverse causality cannot be excluded.

http://www.neurology.org/cgi/content/short/84/7/688?rss=1

Source: Neurology - February 16, 2015 Category: Neurology Authors: Lipton, R. B., Fanning, K. M., Serrano, D., Reed, M. L., Cady, R., Buse, D. C. Tags: Migraine, Prevalence studies, Incidence studies, Natural history studies (prognosis), Risk factors in epidemiology ARTICLE Source Type: research