Chronic Migraine facts. Global estimates suggest that roughly 1% of the world’s adult population suffers from Chronic Migraine.1 Based on this estimate, over 270,000 adult Canadians 18 years of age and older suffer from Chronic Migraine.1,*
Read the full story by flipping through the Chronic Migraine e-Magazine.

Quick facts
  Chronic Migraine is a subtype of migraine2               The frequency of headache days is a key differentiator between episodic migraine and Chronic Migraine. Chronic Migraine is defined as ≥ 15 headache days a month, with headaches lasting ≥ 4 hours per day, 8 or more of those days being migraine or probable migraine3,4               While nearly all migraine patients use acute medications, 13% receive prophylactic treatment5               By analyzing data for a subset of 520 Chronic Migraine patients, researchers found that approximately 80% had not received a diagnosis of Chronic Migraine, meaning only 20% of Chronic Migraine patients (n = 520) are properly diagnosed6          

*Estimated global Chronic Migraine prevalence rate of 1 per cent as sourced from Natoli JL et al. Global Prevalence of Chronic Migraine: A Systematic Review. Cephalalgia. 2010 May;30(5):599-609 has been applied to 2010 CDN population figures for those 18+ years of age (n=27,196,554) (Source: Statistics Canada).

References:
  1. Natoli JL, Manack A, Dean B, et al. Global prevalence of chronic migraine: a systematic review. Cephalalgia. 2010;30(5):599-609.
  2. Headache Classification Subcommittee of the International Headache Society. The International Classification of Headache Disorders: 2nd edition. Cephalalgia. 2004;24(suppl 1):9-160.
  3. Bigal ME, Lipton RB. The differential diagnosis of chronic daily headaches: an algorithm-based approach. J Headache Pain. 2007;8(5):263-272.
  4. Olesen J, Bousser M-G, Diener H-C, et al; Headache Classification Committee. New appendix criteria open for a broader concept of chronic migraine. Cephalalgia. 2006;26(6):742-746.
  5. Lipton RB, Bigal ME, Diamond M, Freitag F, Reed ML, Stewart WF; AMPP Advisory Group. Migraine prevalence, disease burden, and the need for preventive therapy. Neurology. 2007;68(5):343-349.
  6. Bigal ME, Serrano D, Reed M, Lipton RB. Chronic migraine in the population: burden, diagnosis, and satisfaction with treatment. Neurology. 2008;71(8):559-566.