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Editors Welcome| Volume 45, 102527, October 2020

Is the incidence of multiple sclerosis really increasing?

Published:September 29, 2020DOI:https://doi.org/10.1016/j.msard.2020.102527
      Almost every article that describes the incidence of multiple sclerosis (MS) over various epochs suggests that it is rising and that the incremental rates are higher for women than men. In recent years the claim for increasing MS incidence is particularly notable for inhabitants of the Middle East (
      • Almasi-Hashiani A.
      • Sahraian M.A.
      • Eskandarieh S.
      Evidence of an increased prevalence of multiple sclerosis: a population-based study of Tehran registry during 1999–2018.
      ;
      • Etemadifar M.
      • Nikanpour Y.
      • Neshatfar A.
      • Mansourian M.
      • Fitzgerald S.
      Incidence and prevalence of multiple sclerosis in persian gulf area: a systematic review and meta-analysis.
      ). In general, there is adjustment for population size, age and gender and sometimes for migration in or out of the relevant area. But what about other confounders? There has been significantly increased awareness of MS over the past 30 years particularly following the introduction of MRI and disease modifying treatment (DMT). Such heightened recognition may be gauged by the number of MS-related articles cited in PubMed (Fig. 1). The graph shows that the rate of MS citations has approximately doubled every 10 years. This increased awareness will filter through to clinicians, patients and their families and result in higher referral rates to secondary care centres.
      Fig 1
      Fig. 1Serial trends in publications related to MS as listed in PubMed 1970-2020. Note: the data for 2020 are not yet complete.

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      References

        • Almasi-Hashiani A.
        • Sahraian M.A.
        • Eskandarieh S.
        Evidence of an increased prevalence of multiple sclerosis: a population-based study of Tehran registry during 1999–2018.
        BMC Neurol. 2020; 20 (Dec): 1-7
        • Benedikz J.G.
        • Magnusson H.
        • Gudmunsson G.
        Multiple sclerosis in Iceland with observations on the alleged epidemic in the Faroe Islands.
        Ann. Neurol. 1994; 36: S175-S179
        • Benedikz J.E.
        • Magnusson H.
        • Poser C
        • Benedikz E.
        • Olafsdottir G.
        • Gudmundsson G.
        Multiple sclerosis in Iceland 1900-1985.
        J. Trop. Geograph. Neurol. 1991; 1: 16-22
        • Cook S.D.
        • Cromarty J.I.
        • Tapp W.
        • Poskanzer D.
        • Walker J.D.
        • Dowling P.C.
        Declining incidence of multiple sclerosis in the Orkney Islands.
        Neurology. 1985; 35 (Apr 1): 545
        • Crielaard L.
        • Kavaliunas A.
        • Ramanujam R.
        • Olsson T.
        • Hillert J.
        • Stridh P.
        • Kockum I.
        • Manouchehrinia A.
        Factors associated with and long-term outcome of benign multiple sclerosis: a nationwide cohort study.
        J. Neurol. Neurosurg. Psychiatry. 2019; 90 (Jul 1): 761-767
        • Dalton C.M.
        • Brex P.A.
        • Miszkiel K.A.
        • Hickman S.J.
        • MacManus D.G.
        • Plant G.T.
        • Thompson A.J.
        • Miller D.H.
        Application of the new McDonald criteria to patients with clinically isolated syndromes suggestive of multiple sclerosis.
        Ann. Neurol. 2002; 52 (Jul): 47-53
        • Etemadifar M.
        • Nikanpour Y.
        • Neshatfar A.
        • Mansourian M.
        • Fitzgerald S.
        Incidence and prevalence of multiple sclerosis in persian gulf area: a systematic review and meta-analysis.
        Mult. Scler. Relat. Disord. 2020; 40 (May 1)101959
        • Gafson A.
        • Giovannoni G.
        • Hawkes C.H.
        The diagnostic criteria for multiple sclerosis: from Charcot to McDonald.
        Mult. Scler. Relat. Disord. 2012; 1 (Jan 1): 9-14
        • Hawkes C.H.
        Is multiple sclerosis a sexually transmitted infection?.
        in: Columbus F H Chapter 8 in Treatment and Management of Multiple Sclerosis. Nova Science Publications, New York2005: 169-221
        • Hawkes C.H.
        • Giovannoni G.
        The McDonald criteria for multiple sclerosis: time for clarification.
        Mult. Scler. J. 2010; 15: 566-575
        • Hawkins S.A.
        • McDonnell G.V.
        Benign multiple sclerosis? Clinical course, long term follow up, and assessment of prognostic factors.
        J. Neurol. Neurosurg. Psychiatry. 1999; 67 (Aug 1): 148-152
        • Kaisey M.
        • Solomon A.J.
        • Luu M.
        • Giesser B.S.
        • Sicotte N.L.
        Incidence of multiple sclerosis misdiagnosis in referrals to two academic centers.
        Mult. Scler. Relat. Disord. 2019; 30 (May 1): 51-56
        • Kim J.E.
        • Park S.H.
        • Han K.
        • Kim H.J.
        • Shin D.W.
        • Kim S.M.
        Prevalence and incidence of neuromyelitis optica spectrum disorder and multiple sclerosis in Korea.
        Mult. Scler. J. 2019; (Epub ahead of print. PMID: 31749401.)https://doi.org/10.1177/1352458519888609
        • Koch-Henriksen N.
        • Thygesen L.C.
        • Stenager E.
        • Laursen B.
        • Magyari M.
        Incidence of MS has increased markedly over six decades in Denmark particularly with late onset and in women.
        Neurology. 2018; 90 (May 29): e1954-e1963
        • Kurtzke J.F.
        • Heltberg A.
        Multiple sclerosis in the Faroe Islands: an epitome.
        J. Clin. Epidemiol. 2001; 54 (Jan 1): 1-22

      Biography

      Christopher H Hawkes: Joint Chief Editor of Multiple Sclerosis and Related Disorders.

      Biography

      Gavin Giovannoni: Over the last 5 years, Professor Giovannoni has received personal compensation for participating on Advisory Boards in relation to multiple sclerosis clinical trial design, trial steering committees and data and safety monitoring committees from Abbvie, Actelion, Atara Bio, Biogen, Bristol Myers Squibb, Celgene, Genentech, Janssen, Japanese Tobacco, Merck KGAa, Novartis, Roche, Sanofi-Genzyme and Teva. Professor Giovannoni is and editor of Multiple Sclerosis and Related Disorders and chairs the MS Brain Health initiative, MS Academy and triMS.online conference. He has previously been a member of the multiple sclerosis and related disorders specialist advisory group of the Association of British Neurologists and an ECTRIMS representative. He is a director of Oxford Health Policy Forum, a non-profit social enterprise.

      Biography

      Jeanette Lechner-Scott: has accepted travel compensation from Novartis, Biogen, Roche and Merck. Her institution receives the honoraria for talks and advisory board commitment as well as research grants from Biogen, Merck, Roche, TEVA and Novartis.

      Biography

      Michael Levy: has received consulting fees from Alexion, Viela Bio and Genentech/Roche/Chugai. In addition, he has received consulting fees from Quest Diagnostics and UCB Pharmaceuticals.