Karl Bjørnar Alstadhaug
Job description
Alstadhaug fullførte profesjonsstudiet i medisin ved UiT i Tromsø i 1999. Han ble spesialist i nevrologi i 2007, og doktorerte samme år med avhandlingen Temporal patterns of migraine. I tillegg til forskning og undervisning har han i over 20 år jobbet som klinisk nevrolog.
Karl Bjørnar Alstadhaug,
Ane Skaare Sjulstad
:
Praksis bør endres ved spinalpunksjon
Tidsskrift for Den norske legeforening (Tidsskriftet) 2025 DOI
Nora Stensland Bugge,
Kjersti Vetvik,
Karl Bjørnar Alstadhaug,
Tonje Bjørndal Braaten
:
Cumulative exposure to estrogen may increase the risk of migraine in women
Ane Skaare Sjulstad,
Ole Lars Brekke,
Karl Bjørnar Alstadhaug
:
Visual inspection versus spectrophotometry for xanthochromia detection in patients with sudden onset severe headache—A diagnostic accuracy study
Camilla Novy,
Øyvind Busk,
Ole-Bjørn Tysnes,
Sigve Strand Landa,
Tori Navestad Aanjesen,
Karl Bjørnar Alstadhaug
et al.:
Repeat expansions in AR, ATXN1, ATXN2 and HTT in Norwegian patients diagnosed with amyotrophic lateral sclerosis
Karl Bjørnar Alstadhaug,
Espen Benjaminsen
:
Å kunne stave og skrive, men ikke lese
Tidsskrift for Den norske legeforening (Tidsskriftet) 2024 DOI
Cathrine Goberg Olsen,
Vetle Nilsen Malmberg,
Maria Fahlström,
Karl Bjørnar Alstadhaug,
Ingrid Kristine Bjørnå,
Geir Julius Braathen
et al.:
Amyotrophic lateral sclerosis caused by the C9orf72 expansion in Norway–prevalence, ancestry, clinical characteristics and sociodemographic status
Karl Bjørnar Alstadhaug,
Charalampos Tzoulis,
Axel Meyer Simonsen
:
Beverages, caffeine, and Parkinson's disease
Academic Press 2023 DOI
Merethe Karlberg,
Hanne Thoresen,
Diana Hristova Berg,
Oana-Gratiela Ciopat,
Karl Bjørnar Alstadhaug
:
En mann i 40-årene med akutt forvirring
Marianne Sivertsen,
Hanne De Jaegher,
Karl Bjørnar Alstadhaug,
Ellen Christin Arntzen,
Britt Normann
:
The precarity of patient participation - a qualitative interview study of experiences from the acute stroke and rehabilitation journey
Marianne Sivertsen,
Ellen Christin Arntzen,
Karl Bjørnar Alstadhaug,
Britt Normann
:
Effect of innovative vs. usual care physical therapy in subacute rehabilitation after stroke. A multicenter randomized
controlled trial
Cathrine Goberg Olsen,
Øyvind Løvold Busk,
Tori Navestad Aanjesen,
Karl Bjørnar Alstadhaug,
Ingrid Kristine Bjørnå,
Geir Julius Braathen
et al.:
Genetic Epidemiology of Amyotrophic lateral Sclerosis in Norway: A 2-Year Population-Based Study
Marianne Sivertsen,
Hanne De Jaegher,
Ellen Christin Arntzen,
Karl Bjørnar Alstadhaug,
Britt Normann
:
Embodiment, tailoring, and trust are important for co-construction of meaning in physiotherapy after stroke: A qualitative study
Andreas Kildahl Jaklin,
Espen Benjaminsen,
Karl Bjørnar Alstadhaug
:
Effectiveness of Natalizumab in Achieving No Evidence of Disease Activity (NEDA-3)—Data From a Local Norwegian Cohort
Ane Skaare Sjulstad,
Francis Odeh,
Farid Baloch,
Diana Hristova Berg,
Kathrine Grønning Arntzen,
Karl Bjørnar Alstadhaug
:
Occurrence of postdural puncture headache—A randomized controlled trial comparing 22G Sprotte and Quincke
Espen Benjaminsen,
Kjell-Morten Myhr,
Nina Agnethe Grytten Torkildsen,
Karl Bjørnar Alstadhaug
:
Comorbidity in multiple sclerosis patients from Nordland County, Norway - validated data from the Norwegian Patient Registry
Karl Bjørnar Alstadhaug,
Hilde Karen Ofte,
Kai Ivar Müller,
Anna P. Andreou
:
Sudden caffeine withdrawal triggers migraine—A randomized controlled trial
Anne Hege Aamodt,
Marte-Helene Bjørk,
Karl Bjørnar Alstadhaug,
Guttorm Eldøen,
Aud Nome Dueland,
Tine Poole
et al.:
Praktisk håndtering av hodepine
Ane Skaare Sjulstad,
Karl Bjørnar Alstadhaug
:
What is currently the best investigational approach to the patient with sudden-onset severe headache?
Karl Bjørnar Alstadhaug,
Anna P. Andreou
:
Caffeine and primary (migraine) headaches-friend or foe?
Espen Benjaminsen,
Kjell-Morten Myhr,
Nina Grytten,
Karl Bjørnar Alstadhaug
:
Validation of the multiple sclerosis diagnosis in the Norwegian Patient Registry
Karl Bjørnar Alstadhaug,
Hilde Karen Ofte,
Espen Saxhaug Kristoffersen
:
Prävention und Therapie des Medikamentenübergebrauchskopfschmerzes
Der Schmerz (Berlin. Print) 2018 DOI
Espen Benjaminsen,
Karl Bjørnar Alstadhaug,
Marie Gulsvik,
Farid Baloch,
Francis Odeh
:
Amyotrophic lateral sclerosis in Nordland county, Norway, 2000–2015: prevalence, incidence, and clinical features
Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration 2018 DOI
Kai Ivar Müller,
Karl Bjørnar Alstadhaug,
Svein Ivar Bekkelund
:
Headache patients' satisfaction with telemedicine: a 12-month follow-up randomized non-inferiority trial
Karl Bjørnar Alstadhaug,
Kjell-Morten Myhr,
Christine Hanssen Rinaldo
:
Progredierende multifokal leukoencefalopati
Tidsskrift for Den norske legeforening (Tidsskriftet) 12. décembre 2017 DOI
Karl Bjørnar Alstadhaug,
Hilde Karen Ofte,
Espen Saxhaug Kristoffersen
:
Preventing and treating medication overuse headache
Svein Ivar Bekkelund,
Kai Ivar Müller,
Aleksander Wilhelmsen,
Karl Bjørnar Alstadhaug
:
Photophobia and seasonal variation of migraine in a subarctic population
Headache 2017 DOI
Espen Benjaminsen,
Kjell-Morten Myhr,
Karl Bjørnar Alstadhaug
:
The prevalence and characteristics of epilepsy in patients with multiple sclerosis in Nordland county, Norway
Seizure 2017 DOI
Kai Ivar Müller,
Karl Bjørnar Alstadhaug,
Svein Ivar Bekkelund
:
A randomized trial of telemedicine efficacy and safety for nonacute headaches
Kai Ivar Müller,
Karl Bjørnar Alstadhaug,
Svein Ivar Bekkelund
:
Telemedicine in the management of non-acute headaches: A prospective,open-labelled non-inferiority,randomised clinical trial
Cephalalgia 2016 DOI
Kai Ivar Müller,
Karl Bjørnar Alstadhaug,
Svein Ivar Bekkelund
:
Acceptability, feasibility, and cost of telemedicine for nonacute headaches: A randomized study comparing video and traditional consultations
Hilde Karen Ofte,
Erling Andreas Tronvik,
Karl Bjørnar Alstadhaug
:
Lack of association between cluster headache and PER3 clock gene polymorphism
Karl Bjørnar Alstadhaug,
Hanne Winge Kvarenes,
Jan Fredrik Prytz,
Christian A. Vedeler
:
A case of relapsing-remitting facial palsy and ipsilateral brachial plexopathy caused by HSV-1
Journal of Clinical Virology 2016 DOI
Karl Bjørnar Alstadhaug,
Hilde Karen Ofte
:
Klasehodepine :
Tidsskrift for Den norske legeforening (Tidsskriftet) 2015 DOI
Hilde Karen Ofte,
Therese von Hanno,
Karl Bjørnar Alstadhaug
:
Reduced cranial parasympathetic tone during the remission phase of cluster headache
Cephalalgia 2015 DOI
Espen Benjaminsen,
Johnny Olavsen,
Merethe Karlberg,
Karl Bjørnar Alstadhaug
:
Multiple sclerosis in the far north - incidence and prevalence in Nordland County, Norway, 1970-2010
BMC Neurology 2014 DOI
Karl Bjørnar Alstadhaug,
Erling Andreas Tronvik,
Anne Hege Aamodt
:
Transient ischemic attack or migraine with aura?
Karl Bjørnar Alstadhaug,
Anne Hege Aamodt
:
Etablering av medisinske sannheter
Karl Bjørnar Alstadhaug,
Grete Bakkejord,
Hans Kristian Bø
:
Could recurrent painful ophthalmoplegic neuropathy be caused by a neurovascular conflict?: A case report
Cephalalgia Reports 2023 DOI
Marianne Sivertsen,
Ellen Christin Arntzen,
Karl Bjørnar Alstadhaug,
Britt Normann
:
The precarious patient participation - a qualitative interview study of experiences from the acute stroke and rehabilitation journey
2022
Marianne Sivertsen,
Ellen Christin Arntzen,
Karl Bjørnar Alstadhaug,
Britt Normann
:
Individualized, comprehensive physiotherapy vs usual care. Effects on balance, gait and physical activity in subacute rehabilitation after stroke: a multicentre randomized controlled trial
2022
Marianne Sivertsen,
Hanne De Jaegher,
Ellen Christin Arntzen,
Karl Bjørnar Alstadhaug,
Britt Normann
:
Embodiment, tailoring and trust and their importance for co-construction of meaning in physiotherapy after a stroke
2022
Marianne Sivertsen,
Hanne De Jaegher,
Ellen Christin Arntzen,
Karl Bjørnar Alstadhaug,
Britt Normann
:
Felles meningsskaping i fysioterapi etter hjerneslag
2022
Marianne Sivertsen,
Hanne De Jaegher,
Karl Bjørnar Alstadhaug,
Ellen Christin Arntzen,
Britt Normann
:
Den sårbare deltakelsen. En kvalitativ studie om erfaringer fra akutt hjerneslag og rehabilitering.
2022
Karl Bjørnar Alstadhaug,
Christine Hanssen Rinaldo,
Liv T. N. Osnes,
Irini Sereti,
Hilde Karen Ofte
:
Progressive multifocal leukoencephalopathy treated with interleukin-7
Clinical Infection in Practice 2020 DOI
Kathrine Grønning Arntzen,
Karl Bjørnar Alstadhaug
:
Room tilt illusion and subclavian steal - A case report
Kjell-Morten Myhr,
Stephan Schuler,
Karl Bjørnar Alstadhaug
:
Long-term, real-world effectiveness of natalizumab treatment in relapsing-remitting multiple sclerosis (RRMS): data from ≥6 years in the TYSABRI® Observational Program (TOP) Nordic and global cohorts.
2019
Karl Bjørnar Alstadhaug,
Merethe Karlberg
:
Hemichorea-hemiballisme
Tidsskrift for Den norske legeforening (Tidsskriftet) 2019 DOI
Karl Bjørnar Alstadhaug,
Hilde Karen Ofte
:
Spot On?
Headache 2018 DOI
Karl Bjørnar Alstadhaug,
Randi Hallstensen,
Francis Odeh
:
Progressive multifocal leukoencephalopathy in a patient with systemic mastocytosis treated with cladribine
Journal of Clinical Virology 2017 DOI
Hilde Karen Ofte,
Therese von Hanno,
Karl Bjørnar Alstadhaug
:
Retinal vasculature in cluster headache
Cephalalgia 2017 DOI
The 50 latest publications is shown on this page. See all publications in Cristin here →
Research interests
Til vanlig jobber Alstadhaug på nevrologisk avdeling I Bodø, og hans forskning er først og fremst klinisk, fokusert på alt fra hjerneslag og infeksjoner i sentralnervesystemet til demyeliniserende sykdommer og ulike hodepinetilstander. Han er spesielt interessert i migrene og hypothalamus sin rolle ved primære hodepiner. I 2014-2016 var han gjesteforsker ved Imperial College i London der han jobbet med en eksperimentell dyremodell.
Teaching
Alstadhaug har lang og bred erfaring som underviser og foredragsholder. Han har undervist siste års medisinstudenter siden 2009, og har skrevet tre fag-/lærebøker, Migreneboken (2011), Den nevrologiske pasient (2022) og Klinisk nevrobiologi (2025).