Incidence and predictors for chronicity of headache in patients with episodic migraine

Neurology. 2004 Mar 9;62(5):788-90. doi: 10.1212/01.wnl.0000113747.18760.d2.

Abstract

The authors followed 532 consecutive patients with episodic migraine (<15 days/month) for 1 year. Sixty-four patients (14%) developed chronic headache (>/=15 days/month). The odds ratios for developing CH were 20.1 (95% CI 5.7 to 71.5) comparing patients with a "critical" (10 to 14 days/month) vs "low" (0 to 4 days/month) and 6.2 (95% CI 1.7 to 26.6) in patients with an "intermediate" (6 to 9 days/month) vs "low" headache frequency and 19.4 (95% CI 8.7 to 43.2) comparing patients with and without medication overuse.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Chronic Disease
  • Female
  • Headache Disorders / epidemiology*
  • Humans
  • Incidence
  • Male
  • Middle Aged
  • Migraine Disorders / epidemiology*
  • Risk Factors