Haut SR, Bigal ME, Lipton RB: Chronic disorders with episodic manifestations: focus on epilepsy and migraine. Lancet Neurol 2006, 5:148–157.PubMedCrossRefGoogle Scholar
Manack A, Turkel C, Silberstein S: The evolution of chronic migraine: classification and nomenclature. Headache 2009, 49:1206–1213.PubMedCrossRefGoogle Scholar
Olesen J, Bousser MG, Diener HC, Dodick D, First M, Goadsby PJ, Gobel H, Lainez MJ, Lance JW, Lipton RB, Nappi G, Sakai F, Schoenen J, Silberstein SD, Steiner TJ: New appendix criteria open for a broader concept of chronic migraine. Cephalalgia 2006, 26:742–746.PubMedCrossRefGoogle Scholar
Olesen J: International Classification of Headache Disorders, Second Edition (ICHD-2): current status and future revisions. Cephalalgia 2006, 26:1409–1410.PubMedCrossRefGoogle Scholar
Diener HC, Bussone G, Van Oene JC, Lahaye M, Schwalen S, Goadsby PJ: Topiramate reduces headache days in chronic migraine: a randomized, double-blind, placebo-controlled study. Cephalalgia 2007, 27:814–823.PubMedCrossRefGoogle Scholar
Scher AI, Stewart WF, Liberman J, Lipton RB: Prevalence of frequent headache in a population sample. Headache 1998, 38:497–506.PubMedCrossRefGoogle Scholar
Castillo J, Muñoz P, Guitera V, Pascual J: Epidemiology of chronic daily headache in the general population. Headache 1999, 39:190–196.PubMedCrossRefGoogle Scholar
Lantéri-Minet M, Auray JP, El Hasnaoui A, Dartigues JF, Duru G, Henry P, Lucas C, Pradalier A, Chazot G, Gaudin AF: Prevalence and description of chronic daily headache in the general population in France. Pain 2003, 102:143–149.PubMedCrossRefGoogle Scholar
Wiendels NJ, Knuistingh NA, Rosendaal FR, Spinhoven P, Zitman FG, Assendelft WJ, Ferrari MD: Chronic frequent headache in the general population: prevalence and associated factors. Cephalalgia 2006, 26:1434–1442.PubMedCrossRefGoogle Scholar
Bigal ME, Serrano D, Buse D, Scher A, Stewart WF, Lipton RB: Acute migraine medications and evolution from episodic to chronic migraine: a longitudinal population-based study. Headache 2008, 48:1157–1168.PubMedCrossRefGoogle Scholar
•• Buse DC, Manack A, Serrano D, Turkel C, Lipton RB: Sociodemographic and comorbidity profiles of chronic migraine and episodic migraine sufferers. J Neurol Neurosurg Psychiatry 2010, 81:428–432. This article provides new evidence regarding the sociodemographic and comorbidity profile associated with chronic migraine. Anxiety, depression, nonheadache chronic pain disorders, respiratory disorders including asthma, bronchitis and chronic obstructive pulmonary disease, and cardiac risk factors including hypertension, diabetes, high cholesterol, and obesity all were significantly more likely to be reported by patients with chronic migraine than by those with episodic migraine.
Wang SJ, Fuh JL, Lu SR, Liu CY, Hsu LC, Wang PN, Liu HC: Chronic daily headache in Chinese elderly: prevalence, risk factors, and biannual follow-up. Neurology 2000, 54:314–319.PubMedGoogle Scholar
Lu SR, Fuh JL, Chen WT, Juang KD, Wang SJ: Chronic daily headache in Taipei, Taiwan: prevalence, follow-up and outcome predictors. Cephalalgia 2001, 21:980–986.PubMedCrossRefGoogle Scholar
Silberstein S, Tfelt-Hansen P, Dodick DW, Limmroth V, Lipton RB, Pascual J, Wang SJ: Guidelines for controlled trials of prophylactic treatment of chronic migraine in adults. Cephalalgia 2008, 28:484–495.PubMedCrossRefGoogle Scholar
Dodick DW, Turkel CC, Degryse RE, Aurora SK, Silberstein SD, Lipton RB, Diener HC, Brin MF, on behalf of the PREEMPT Chronic Migraine Study Group: OnabotulinumtoxinA for treatment of chronic migraine: Pooled results from the double-blind, randomized, placebo-controlled phases of the PREEMPT clinical program. Headache 2010, 50:921–963.PubMedCrossRefGoogle Scholar
Mathew NT, Reuveni U, Perez F: Transformed or evolutive migraine. Headache 1987, 27:102–106.PubMedCrossRefGoogle Scholar
Silberstein SD, Lipton RB, Solomon S, Mathew NT: Classification of daily and near-daily headache: Proposed revisions to the IHS criteria. Headache 1994, 34:1–7.CrossRefGoogle Scholar
Silberstein SD, Lipton RB, Sliwinski M: Classification of daily and near-daily headaches: field trial of revised IHS criteria. Neurology 1996, 47:871–875.PubMedGoogle Scholar
The International Classification of Headache Disorders: 2nd edition. Cephalalgia 2004, 24(Suppl 1):9–160.
Bigal ME, Tepper SJ, Sheftell FD, Rapoport AM, Lipton RB: Chronic daily headache: correlation between the 2004 and the 1988 International Headache Society diagnostic criteria. Headache 2004, 44:684–691.PubMedCrossRefGoogle Scholar
Bigal ME, Sheftell FD, Rapoport AM, Lipton RB, Tepper SJ: Chronic daily headache in a tertiary care population: correlation between the International Headache Society diagnostic criteria and proposed revisions of criteria for chronic daily headache. Cephalalgia 2002, 22:432–438.PubMedCrossRefGoogle Scholar
Olesen J: The future of headache classification and classification research. Cephalalgia 2009, 29:1240–1241.PubMedCrossRefGoogle Scholar
Zeeberg P, Olesen J, Jensen R: Medication overuse headache and chronic migraine in a specialized headache centre: field-testing proposed new appendix criteria. Cephalalgia 2009, 29:214–220.PubMedCrossRefGoogle Scholar
Fuh JL, Wang SJ, Lu SR, Juang KD: Does medication overuse headache represent a behavior of dependence? Pain 2005, 119:49–55.PubMedCrossRefGoogle Scholar
Lipton RB, Bigal ME: Chronic daily headache: is analgesic overuse a cause or a consequence? Neurology 2003, 61:154–155.PubMedGoogle Scholar
Manzoni GC, Lambru G, Torelli P: Chronically evolving headaches: classification and terminology. Neurol Sci 2006, 27(Suppl 2):S164-S167.PubMedCrossRefGoogle Scholar
•• Natoli J, Manack A, Dean B, Butler Q, Turkel C, Stovner L, Lipton R: Global prevalence of chronic migraine: a systematic review. Cephalalgia 2010, 30:599–609. This article provides an overview of chronic migraine prevalence estimates and explores global differences with a relevant discussion on the various diagnostic criteria for chronic migraine.
Katsarava Z, Manack A, Yoon M-S, Obermann M, Becker H, Dommes P, Turkel C, Lipton RB, Diener HC: Chronic migraine: classification and comparisons. Neurology 2010, In press.
Straube A, Pfaffenrath V, Ladwig KH, Meisinger C, Hoffmann W, Fendrich K, Vennemann M, Berger K: Prevalence of chronic migraine and medication overuse headache in Germany-the German DMKG headache study. Cephalalgia 2010, 30:207–213.PubMedCrossRefGoogle Scholar
•• Katsarava Z, Dzagnidze A, Kukava M, Mirvelashvili E, Djibuti M, Janelidze M, Jensen R, Stovner LJ, Steiner TJ: Primary headache disorders in the Republic of Georgia: Prevalence and risk factors. Neurology 2009, 73:1796–1803. This study utilized a community-based, door-to-door survey design to estimate the prevalence of primary headache disorders within a developing region and determined that rates were comparable to European Union and United States estimates. This study also substantiated the unmet medical needs for those suffering from headache.
• da Silva A, Jr., Costa EC, Gomes JB, Leite FM, Gomez RS, Vasconcelos LP, Krymchantowski A, Moreira P, Teixeira AL: Chronic Headache and Comorbibities: A Two-Phase, Population-Based, Cross-Sectional Study. Headache 2010, Epub ahead of print. There is limited data on the prevalence and disease course of chronic daily headache in South America. This article concludes that the prevalence of chronic daily headache in rural area of Brazil is similar to previously published data in South America, and that psychiatric conditions often are comorbid.
Katsarava Z, Schneeweiss S, Kurth T, Kroener U, Fritsche G, Eikermann A, Diener HC, Limmroth V: Incidence and predictors for chronicity of headache in patients with episodic migraine. Neurology 2004, 62:788–790.PubMedGoogle Scholar
Dahlöf CG, Johansson M, Casserstedt S, Motallebzadeh T: The course of frequent episodic migraine in a large headache clinic population: a 12-year retrospective follow-up study. Headache 2009, 49:1144–1152.PubMedCrossRefGoogle Scholar
Bigal M: Migraine chronification--concept and risk factors. Discov Med 2009, 8:145–150.PubMedGoogle Scholar
Ashina S, Lyngberg A, Jensen R: Headache characteristics and chronification of migraine and tension-type headache: A population-based study. Cephalalgia 2010, 30:943–952.PubMedGoogle Scholar
Breslau N, Lipton RB, Stewart WF, Schultz LR, Welch KM: Comorbidity of migraine and depression: investigating potential etiology and prognosis. Neurology 4-22-2003, 60:1308–1312.
•• Blumenfeld AM, Varon SF, Buse DC, Kawata AK, Manack A, Goadsby PJ, Lipton RB: Disability, HRQOL and Resource Use Among Chronic and Episodic Migraineurs: Results from the International Burden of Migraine Study (IBMS). Cephalalgia 2010, doi:10.1177/0333102410381145
. This study is the only multicountry, international study of migraine epidemiology, impact, and burden. The study utilized a web-based survey with items that parallel the United States AMPP study questionnaires. Results of this article compare persons with episodic migraine and chronic migraine on headache features, headache-related disability, health-related quality of life, health care resource utilization, and medical and psychiatric comorbidities across nine countries
Ashina S, Buse DC, Manack AN, Serrano D, Maizels M, Turkel C, Lipton RB. Depression: a risk factor for migraine chronification: results from the American Migraine Prevalence and Prevention (AMPP) Study. Neurology 74(Suppl 2):A113, 2010. Presented at the Annual Meeting of the American Academy of Neurology, April 13, 2010.
Bigal ME, Lipton RB: Modifiable risk factors for migraine progression. Headache 2006, 46:1334–1343.PubMedCrossRefGoogle Scholar
Lipton RB: Tracing transformation: chronic migraine classification, progression, and epidemiology. Neurology 2009, 72:S3-S7.PubMedCrossRefGoogle Scholar
Lipton RB, Bigal ME: Looking to the future: research designs for study of headache disease progression. Headache 2008, 48:58–66.PubMedCrossRefGoogle Scholar
Manack A, Buse DC, Serrano D, Turkel CC, Lipton RB: Rates, predictors, and consequences of remission from chronic migraine to episodic migraine. Neurology 2010, In press.
Couch JR, Lipton RB, Stewart WF, Scher AI: Head or neck injury increases the risk of chronic daily headache: a population-based study. Neurology 2007, 69:1169–1177.PubMedCrossRefGoogle Scholar
Lipton RB, Chu MK: Conceptualizing the relationship between chronic migraine and episodic migraine. Expert Rev Neurother 2009, 9:1451–1454.PubMedCrossRefGoogle Scholar
Bigal ME, Ashina S, Burstein R, Reed ML, Buse D, Serrano D, Lipton RB: Prevalence and characteristics of allodynia in headache sufferers: a population study. Neurology 2008, 70:1525–1533.PubMedCrossRefGoogle Scholar
• Yalug I, Selekler M, Erdogan A, Kutlu A, Dundar G, Ankarali H, Aker T: Correlations between alexithymia and pain severity, depression, and anxiety among patients with chronic and episodic migraine. Psychiatry Clin Neurosci 2010, 64:231–238. This article explored the unclear but hypothesized correlation between alexithymia and the severity of pain, depression, and anxiety among patients with migraine and concluded that depression and anxiety were significantly correlated with alexithymia in both episodic and chronic migraine. Additionally, there was a positive association between depression, anxiety, and alexithymia in both subsets of patients with migraine.
Bigal ME, Serrano D, Reed M, Lipton RB: Chronic migraine in the population: burden, diagnosis, and satisfaction with treatment. Neurology 2008, 71:559–566.PubMedCrossRefGoogle Scholar
Wang SJ, Fuh JL, Lu SR, Juang KD: Quality of life differs among headache diagnoses: analysis of SF-36 survey in 901 headache patients. Pain 2001, 89:285–292.PubMedCrossRefGoogle Scholar
•• Munakata J, Hazard E, Serrano D, Klingman D, Rupnow MF, Tierce J, Reed M, Lipton RB: Economic burden of transformed migraine: Results from the American Migraine Prevalence and Prevention (AMPP) study. Headache 2009, 49:498–508. This article highlights the economic burden that chronic migraine imposes on society in the United States.
Lipton RB, Stewart WF, Diamond S, Diamond ML, Reed M: Prevalence and burden of migraine in the United States: data from the American Migraine Study II. Headache 2001, 41:646–657.PubMedCrossRefGoogle Scholar
Stewart WF, Lipton RB, Dowson AJ, Sawyer J: Development and testing of the Migraine Disability Assessment (MIDAS) Questionnaire to assess headache-related disability. Neurology 2001, 56:S20-S28.PubMedGoogle Scholar
Stewart WF, Wood GC, Manack A, Varon SF, Buse DC, Lipton RB: Employment and Work Impact of Chronic Migraine and Episodic Migraine. J Occup Environ Med 2010, 52:8–14.PubMedCrossRefGoogle Scholar