[1] Collaborators GH. Global, regional, and national burden of migraine and tension-type headache, 1990-2016: a systematic analysis for the Global Burden of Disease Study 2016. Lancet Neurol. 2018;17 11:954-976.
[2] Dabilgou AA, Dravé A, Kyelem JMA, Sawadogo Y, Napon C, Millogo A, et al. Frequency of Headache Disorders in Neurology Outpatients at Yalgado Ouedraogo University Teaching Hospital. A 3-Month Prospective Cross-sectional Study. SN Comprehensive Clinical Medicine. 2020;2:301-307.
[3] Headache Classification Committee of the International Headache Society (IHS) The International Classification of Headache Disorders, 3rd edition. Cephalalgia. 2018;38 1:1-211.
[4] Chalmer MA, Hansen TF, Lebedeva ER, Dodick DW, Lipton RB, Olesen J. Proposed new diagnostic criteria for chronic migraine. Cephalalgia. 2019:333102419877171.
[5] Natoli JL, Manack A, Dean B, Butler Q, Turkel CC, Stovner L, et al. Global prevalence of chronic migraine: a systematic review. Cephalalgia. 2010;30 5:599-609.
[6] Manack AN, Buse DC, Lipton RB. Chronic migraine: epidemiology and disease burden. Curr Pain Headache Rep. 2011;15 1:70-78.
[7] Teixeira AL, Costa EA, da Silva AA, dos Santos IA, Gómez RS, Kummer A, et al. Psychiatric comorbidities of chronic migraine in community and tertiary care clinic samples. J Headache Pain. 2012;13 7:551-555.
[8] Aurora SK, Dodick DW, Turkel CC, DeGryse RE, Silberstein SD, Lipton RB, et al. OnabotulinumtoxinA for treatment of chronic migraine: results from the double-blind, randomized, placebo-controlled phase of the PREEMPT 1 trial. Cephalalgia. 2010;30 7:793-803.
[9] Diener HC, Dodick DW, Aurora SK, Turkel CC, DeGryse RE, Lipton RB, et al. OnabotulinumtoxinA for treatment of chronic migraine: results from the double-blind, randomized, placebo-controlled phase of the PREEMPT 2 trial. Cephalalgia. 2010;30 7:804-814.
[10] Dodick DW, Turkel CC, DeGryse RE, Aurora SK, Silberstein SD, Lipton RB, et al. OnabotulinumtoxinA for treatment of chronic migraine: pooled results from the double-blind, randomized, placebo-controlled phases of the PREEMPT clinical program. Headache. 2010;50 6:921-936.
[11] Aurora SK, Winner P, Freeman MC, Spierings EL, Heiring JO, DeGryse RE, et al. OnabotulinumtoxinA for treatment of chronic migraine: pooled analyses of the 56-week PREEMPT clinical program. Headache. 2011;51 9:1358-1373.
[12] Aurora SK, Dodick DW, Diener HC, DeGryse RE, Turkel CC, Lipton RB, et al. OnabotulinumtoxinA for chronic migraine: efficacy, safety, and tolerability in patients who received all five treatment cycles in the PREEMPT clinical program. Acta Neurol Scand. 2014;129 1:61-70.
[13] Khalil M, Zafar HW, Quarshie V, Ahmed F. Prospective analysis of the use of OnabotulinumtoxinA (BOTOX) in the treatment of chronic migraine; real-life data in 254 patients from Hull, U.K. J Headache Pain. 2014;15:54.
[14] Cernuda-Morollón E, Ramón C, Larrosa D, Alvarez R, Riesco N, Pascual J. Long-term experience with onabotulinumtoxinA in the treatment of chronic migraine: What happens after one year? Cephalalgia. 2015;35 10:864-868.
[15] Pedraza MI, de la Cruz C, Ruiz M, López-Mesonero L, Martínez E, de Lera M, et al. OnabotulinumtoxinA treatment for chronic migraine: experience in 52 patients treated with the PREEMPT paradigm. Springerplus. 2015;4:176.
[16] Russo M, Manzoni GC, Taga A, Genovese A, Veronesi L, Pasquarella C, et al. The use of onabotulinum toxin A (Botox(®)) in the treatment of chronic migraine at the Parma Headache Centre: a prospective observational study. Neurol Sci. 2016;37 7:1127-1131.
[17] Aicua-Rapun I, Martínez-Velasco E, Rojo A, Hernando A, Ruiz M, Carreres A, et al. Real-life data in 115 chronic migraine patients treated with Onabotulinumtoxin A during more than one year. J Headache Pain. 2016;17 1:112.
[18] Kollewe K, Escher CM, Wulff DU, Fathi D, Paracka L, Mohammadi B, et al. Long-term treatment of chronic migraine with OnabotulinumtoxinA: efficacy, quality of life and tolerability in a real-life setting. J Neural Transm (Vienna). 2016;123 5:533-540.
[19] Blumenfeld AM, Stark RJ, Freeman MC, Orejudos A, Manack Adams A. Long-term study of the efficacy and safety of OnabotulinumtoxinA for the prevention of chronic migraine: COMPEL study. J Headache Pain. 2018;19 1:13.
[20] Ahmed F, Gaul C, García-Moncó JC, Sommer K, Martelletti P, Investigators RP. An open-label prospective study of the real-life use of onabotulinumtoxinA for the treatment of chronic migraine: the REPOSE study. J Headache Pain. 2019;20 1:26.
[21] Stark C, Stark R, Limberg N, Rodrigues J, Cordato D, Schwartz R, et al. Real-world effectiveness of onabotulinumtoxinA treatment for the prevention of headaches in adults with chronic migraine in Australia: a retrospective study. J Headache Pain. 2019;20 1:81.
[22] Alpuente A, Gallardo VJ, Torres-Ferrus M, Alvarez-Sabin J, Pozo-Rosich P. Early efficacy and late gain in chronic and high-frequency episodic migraine with onabotulinumtoxinA. Eur J Neurol. 2019; doi: 10.1111/ene.14028.
[23] Eross EJ, Gladstone JP, Lewis S, Rogers R, Dodick DW. Duration of migraine is a predictor for response to botulinum toxin type A. Headache. 2005;45 4:308-314.
[24] Jakubowski M, McAllister PJ, Bajwa ZH, Ward TN, Smith P, Burstein R. Exploding vs. imploding headache in migraine prophylaxis with Botulinum Toxin A. Pain. 2006;125 3:286-295.
[25] Mathew NT, Kailasam J, Meadors L. Predictors of response to botulinum toxin type A (BoNTA) in chronic daily headache. Headache. 2008;48 2:194-200.
[26] Burstein R, Dodick D, Silberstein S. Migraine prophylaxis with botulinum toxin A is associated with perception of headache. Toxicon. 2009;54 5:624-627.
[27] Kim CC, Bogart MM, Wee SA, Burstein R, Arndt KA, Dover JS. Predicting migraine responsiveness to botulinum toxin type A injections. Arch Dermatol. 2010;146 2:159-163.
[28] Bumb A, Seifert B, Wetzel S, Agosti R. Patients profiling for Botox® (onabotulinum toxin A) treatment for migraine: a look at white matter lesions in the MRI as a potential marker. Springerplus. 2013;2:377.
[29] Lin KH, Chen SP, Fuh JL, Wang YF, Wang SJ. Efficacy, safety, and predictors of response to botulinum toxin type A in refractory chronic migraine: a retrospective study. J Chin Med Assoc. 2014;77 1:10-15.
[30] Lee MJ, Lee C, Choi H, Chung CS. Factors associated with favorable outcome in botulinum toxin A treatment for chronic migraine: A clinic-based prospective study. J Neurol Sci. 2016;363:51-54.
[31] Domínguez C, Vieites-Prado A, Pérez-Mato M, Sobrino T, Rodríguez-Osorio X, López A, et al. CGRP and PTX3 as Predictors of Efficacy of Onabotulinumtoxin Type A in Chronic Migraine: An Observational Study. Headache. 2018;58 1:78-87.
[32] Domínguez C, Pozo-Rosich P, Leira Y, Leira R. Unilateral pain and shorter duration of chronic migraine are significant predictors of response to onabotulinumtoxin A. Eur J Neurol. 2018;25 4:e48.
[33] Schiano di Cola F, Caratozzolo S, Liberini P, Rao R, Padovani A. Response Predictors in Chronic Migraine: Medication Overuse and Depressive Symptoms Negatively Impact Onabotulinumtoxin-A Treatment. Front Neurol. 2019;10:678.
[34] Sacco S, Bendtsen L, Ashina M, Reuter U, Terwindt G, Mitsikostas DD, et al. European headache federation guideline on the use of monoclonal antibodies acting on the calcitonin gene related peptide or its receptor for migraine prevention. J Headache Pain. 2019;20 1:6.
[35] Tiseo C, Ornello R, Pistoia F, Sacco S. How to integrate monoclonal antibodies targeting the calcitonin gene-related peptide or its receptor in daily clinical practice. J Headache Pain. 2019;20 1:49.
[36] Olesen J, Steiner TJ. The International classification of headache disorders, 2nd edn (ICDH-II). J Neurol Neurosurg Psychiatry. 2004;75 6:808-811.
[37] Headache Classification Committee of the International Headache Society (IHS). The International Classification of Headache Disorders, 3rd edition (beta version). Cephalalgia. 2013;33 9:629-808.
[38] National Institute for Clinical Excellence (NICE): Botulinum toxin type A for the prevention of headaches in adults with chronic migraine. 2012.
[39] Bendtsen L, Sacco S, Ashina M, Mitsikostas D, Ahmed F, Pozo-Rosich P, et al. Guideline on the use of onabotulinumtoxinA in chronic migraine: a consensus statement from the European Headache Federation. J Headache Pain. 2018;19 1:91.
[40] Ahmed F, Zafar HW, Buture A, Khalil M. Does analgesic overuse matter? Response to OnabotulinumtoxinA in patients with chronic migraine with or without medication overuse. Springerplus. 2015;4:589.
[41] Herd CP, Tomlinson CL, Rick C, Scotton WJ, Edwards J, Ives NJ, et al. Cochrane systematic review and meta-analysis of botulinum toxin for the prevention of migraine. BMJ Open. 2019;9 7:e027953.
[42] Pijpers JA, Kies DA, Louter MA, van Zwet EW, Ferrari MD, Terwindt GM. Acute withdrawal and botulinum toxin A in chronic migraine with medication overuse: a double-blind randomized controlled trial. Brain. 2019;142 5:1203-1214.
[43] Dresler T, Caratozzolo S, Guldolf K, Huhn JI, Loiacono C, Niiberg-Pikksööt T, et al. Understanding the nature of psychiatric comorbidity in migraine: a systematic review focused on interactions and treatment implications. J Headache Pain. 2019;20 1:51.
[44] Pistoia F, Sacco S, Carolei A. Behavioral therapy for chronic migraine. Curr Pain Headache Rep. 2013;17 1:304.