• Biofeedback Treatment App for Pediatric Migraine: Development and Usability Study 

      Stubberud, Anker; Tronvik, Erling Andreas; Olsen, Alexander; Gravdahl, Gøril Bruvik; Linde, Mattias (Peer reviewed; Journal article, 2020)
      Objective The objective of this study was to develop and investigate the usability of a biofeedback treatment smartphone app for adolescent migraine sufferers. Background Biofeedback is effective in treating pediatric ...
    • Clinical features of visual migraine aura: A systematic review 

      Viana, Michele; Tronvik, Erling Andreas; Do, Thien Phu; Zecca, Chiara; Hougaard, Anders (Journal article; Peer reviewed, 2019)
      Background Migraine aura (MA) is a common and disabling neurological condition, characterized by transient visual, and less frequently sensory and dysphasic aura disturbances. MA is associated with an increased risk ...
    • Digital Technology Biofeedback for the Prophylaxis of Pediatric Migraine 

      Stubberud, Anker (Doctoral theses at NTNU;2020:204, Doctoral thesis, 2020)
    • Does pain sensitivity change by migraine phase? A blinded longitudinal study 

      Hagen, Knut; Omland, Petter Moe; Stovner, Lars Jacob; Sand, Trond Halfdan; Uglem, Martin; Tronvik, Erling Andreas; Nilsen, Kristian Bernhard; Linde, Anders Mattias (Journal article; Peer reviewed, 2016)
      Objective: Studies suggest that pain thresholds may be altered before and during migraine headaches, but it is still debated if a central or peripheral dysfunction is responsible for the onset of pain in migraine. The ...
    • Gir ACE-hemmere og angiotensinreseptorantagonister økt risiko for alvorlig covid-19? 

      Aamodt, Anne Hege; Bjørk, Marte-Helene; Tronvik, Erling Andreas; Buanes, Eirik Alnes; Stovner, Lars Jacob; Atar, Dan (Peer reviewed; Journal article, 2020)
      Hypertensjon og diabetes mellitus er risikofaktorer for alvorlig covid-19. Det er blitt reist spørsmål om hvorvidt denne assosiasjonen er relatert til bruk av ACE-hemmere og angiotensin II-reseptorblokkere.
    • Is pituitary MRI screening necessary in cluster headache? 

      Grangeon, Lou; OConnor, Emer; Danno, Daisuke; Ngoc, Thanh Mai Pham; Cheema, Sanjay; Tronvik, Erling Andreas; Davagnanam, Indran; Matharu, Manjit (Peer reviewed; Journal article, 2021)
      Objective To determine the prevalence and clinical predictors of pituitary adenomas in cluster headache patients, in order to determine the necessity of performing dedicated pituitary magnetic resonance imaging in patients ...
    • Lack of association between cluster headache and PER3 clock gene polymorphism 

      Ofte, Hilde Karen; Tronvik, Erling Andreas; Alstadhaug, Karl Bjørnar (Journal article; Peer reviewed, 2016)
      Background: Cluster headache (CH) is regarded as a chronobiological disorder. The hypothalamic biological clock may thus be involved in the pathophysiology, but few studies have actually investigated this in CH patients. ...
    • Measurement and implications of the distance between the sphenopalatine ganglion and nasal mucosa: a neuroimaging study 

      Crespi, Joan Vidal; Bratbak, Daniel Fossum; Dodick, David W.; Matharu, Manjit; Jamtøy, Kent Are; Aschehoug, Irina; Tronvik, Erling Andreas (Journal article; Peer reviewed, 2018)
      Background Historical reports describe the sphenopalatine ganglion (SPG) as positioned directly under the nasal mucosa. This is the basis for the topical intranasal administration of local anaesthetic (LA) towards the ...
    • Nutcracker syndrome mimicking new daily persistent headache: A case report 

      Stubberud, Anker; Cheema, Sanjay; Tronvik, Erling Andreas; Matharu, Manjit (Peer reviewed; Journal article, 2020)
      Introduction Compression of the duodenum and left renal vein between the aorta and superior mesenteric artery usually leads to symptoms of proximal bowel obstruction or hematuria and, more rarely, nonspecific mild ...
    • Pituitary adenoma and non-acute headache: is there an association, and does treatment help? 

      Gravdahl, Gøril Bruvik; Tronvik, Erling Andreas; Fougner, Stine Lyngvi; Solheim, Ole (Journal article; Peer reviewed, 2016)
      Objective Headache is a controversial indication for treatment of pituitary adenoma. We studied the possible relationship between pituitary adenomas and headache as well as the symptomatic effects of treatment. Met ...
    • Self-administered biofeedback treatment app for pediatric migraine: A randomized pilot study 

      Stubberud, Anker; Linde, Mattias; Brenner, Eiliv; Heier, Martin; Olsen, Alexander; Aamodt, Anne Hege; Gravdahl, Gøril Bruvik; Tronvik, Erling Andreas (Peer reviewed; Journal article, 2020)
      Objective To investigate the effect size, safety, and tolerability of a therapist‐independent biofeedback treatment app among adolescent with migraine. Materials and Methods This was a prospective, 3:1 ratio randomized, ...
    • The crossover design for migraine preventives: an analyses of four randomized placebo-controlled trials 

      Astrid Bjørke, Jenssen; Stovner, Lars Jacob; Tronvik, Erling Andreas; Sand, Trond; Helde, Grethe; Gravdahl, Gøril Bruvik; Hagen, Knut (Journal article; Peer reviewed, 2019)
      Aims To evaluate the crossover design in migraine preventive treatment trials by assessing dropout rate, and potential period and carryover effect in four placebo-controlled randomized controlled trials (RCTs). Methods In ...
    • The epidemiology of headache disorders: a face-to-face interview of participants in HUNT4 

      Hagen, Knut; Åsberg, Anders Nikolai; Uhlig, Benjamin Langsæter; Tronvik, Erling Andreas; Brenner, Eiliv; Stjern, Marit; Helde, Grethe; Gravdahl, Gøril Bruvik; Sand, Trond (Journal article; Peer reviewed, 2018)
      Background The primary aim of this cross-sectional population-based study was to evaluate the 1-year prevalence of common headache disorders by a face-to-face interview. Methods The fourth wave of Nord-Trøndelag ...
    • The HUNT4 study: the validity of questionnaire-based diagnoses 

      Hagen, Knut; Åsberg, Anders Nikolai; Uhlig, Benjamin Langsæter; Tronvik, Erling Andreas; Brenner, Eiliv; Sand, Trond (Journal article; Peer reviewed, 2019)
      Background Questionnaire-based headache diagnoses should be validated against diagnoses made by the gold standard, which is personal interview by a headache expert. The diagnostic algorithm with the best diagnostic accuracy ...
    • Treatment of SUNCT/SUNA, paroxysmal hemicrania, and hemicrania continua: An update including single-arm meta-analyses 

      Stubberud, Anker; Tronvik, Erling Andreas; Matharu, Manjit (Peer reviewed; Journal article, 2020)
      Purpose of Review This review presents a critical appraisal of the treatment strategies for short-lasting unilateral neuralgiform headache attacks (SUNHA), paroxysmal hemicrania (PH), and hemicrania continua (HC). We assess ...
    • Visual evoked potentials in migraine: Is the "neurophysiological hallmark" concept still valid? 

      Hagen, Knut; Sand, Trond; Uglem, Martin; Tronvik, Erling Andreas; Linde, Mattias; Omland, Petter Moe (Journal article; Peer reviewed, 2016)
      Objective: Lack of habituation is considered a neurophysiological hallmark of migraine. However, the results of visual evoked potential (VEP) studies have been discrepant, possibly because of different stimulation parameters ...