• Cluster Headache Genomewide Association Study and Meta-Analysis Identifies Eight Loci and Implicates Smoking as Causal Risk Factor 

      Winsvold, Bendik Kristoffer Slagsvold; Harder, Aster V. E.; Ran, Caroline; Chalmer, Mona A.; Dalmasso, Maria Carolina; Ferkingstad, Egil; Tripathi, Kumar Parijat; Bacchelli, Elena; Børte, Sigrid; Fourier, Carmen; Petersen, Anja S.; Vijfhuizen, Lisanne S.; Magnusson, Sigurdur H.; O'Connor, Emer; Bjornsdottir, Gyda; Häppölä, Paavo; Wang, Yen-Feng; Callesen, Ida; Kelderman, Tim; Gallardo, Victor J; de Boer, Irene; Olofsgård, Felicia Jennysdotter; Heinze, Katja; Lund, Nunu; Thomas, Laurent Francois; Hsu, Chia-Lin; Pirinen, Matti; Hautakangas, Heidi; Ribasés, Marta; Guerzoni, Simona; Sivakumar, Prasanth; Yip, Janice; Heinze, Axel; Küçükali, Fahri; Ostrowski, Sisse R.; Pedersen, Ole B.; Kristoffersen, Espen Saxhaug; Martinsen, Amy; Artigas, María S.; Lagrata, Susie; Cainazzo, Maria Michela; Adebimpe, Joycee; Quinn, Olivia; Göbel, Carl; Cirkel, Anna; Volk, Alexander E.; Heilmann-Heimbach, Stefanie; Skogholt, Anne Heidi; Gabrielsen, Maiken Elvestad; Wilbrink, Leopoldine A.; Danno, Daisuke; Mehta, Dwij; Guðbjartsson, Daníel F.; Rosendaal, Frits Richard; Willems van Dijk, Ko; Fronczek, Rolf; Wagner, Michael; Scherer, Martin; Göbel, Hartmut; Sleegers, Kristel; Sveinsson, Olafur A.; Pani, Luca; Zoli, Michele; Ramos-Quiroga, Josep A.; Dardiotis, Efthimios; Steinberg, Anna; Riedel-Heller, Steffi; Sjöstrand, Christina; Thorgeirsson, Thorgeir E.; Stefansson, Hreinn; Southgate, Laura; Trembath, Richard C.; Vandrovcova, Jana; Noordam, Raymond; Paemeleire, Koen; Stefansson, Kari; Fann, Cathy Shen-Jang; Waldenlind, Elisabet; Tronvik, Erling Andreas; Jensen, Rigmor H.; Chen, Shih-Pin; Houlden, Henry; Terwindt, Gisela M.; Kubisch, Christian; Maestrini, Elena; Vikelis, Michail; Pozo-Rosich, Patricia; Belin, Andrea C.; Matharu, Manjit; van den Maagdenberg, Arn M.J.M.; Hansen, Thomas; Ramirez, Alfredo; Zwart, John Anker Henrik (Peer reviewed; Journal article, 2023)
      Objective The objective of this study was to aggregate data for the first genomewide association study meta-analysis of cluster headache, to identify genetic risk variants, and gain biological insights. Methods A ...
    • 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 ...
    • Machine prescription for chronic migraine 

      Stubberud, Anker; Gray, Robert; Tronvik, Erling Andreas; Matharu, Manjit; Nachev, Parashkev (Peer reviewed; Journal article, 2022)
      Responsive to treatment individually, chronic migraine remains strikingly resistant collectively, incurring the second-highest population burden of disability worldwide. A heterogeneity of responsiveness, requiring ...
    • 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 ...
    • Measurement and implications of the distance between the sphenopalatine ganglion and nasal mucosa: a neuroimaging study 

      Crespi, Joan Vidal; Bratbak, Daniel; Dodick, David; Matharu, Manjit; Jamtøy, Kent Are; Aschehoug, Irina; Tronvik, Erling (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 ...
    • An open-label observational study and meta-analysis of non-invasive vagus nerve stimulation in medically refractory chronic cluster headache 

      Simmonds, Lucy; Lagrata, Susie; Stubberud, Anker; Cheema, Sanjay; Tronvik, Erling Andreas; Matharu, Manjit; Kamourieh, Salwa (Peer reviewed; Journal article, 2023)
      Background: Many patients with cluster headache (CH) are inadequately controlled by current treatment options. Non-invasive vagus nerve stimulation (nVNS) is reported to be effective in the management of CH though some ...
    • Phenotype of new daily persistent headache: subtypes and comparison to transformed chronic daily headache 

      Cheema, Sanjay; Stubberud, Anker; Rantell, Khadija; Nachev, Parashkev; Tronvik, Erling Andreas; Matharu, Manjit (Peer reviewed; Journal article, 2023)
      Background It is unknown whether new daily persistent headache (NDPH) is a single disorder or heterogenous group of disorders, and whether it is a unique disorder from chronic migraine and chronic tension-type headache. ...
    • R1352Q CACNA1A variant in a patient with sporadic hemiplegic migrainem ataxia, seizures and cerebral oedema: A case report 

      Stubberud, Anker; O'Connor, Emer; Tronvik, Erling Andreas; Houlden, Henry; Matharu, Manjit (Journal article; Peer reviewed, 2021)
      Mutations in the CACNA1A gene show a wide range of neurological phenotypes including hemiplegic migraine, ataxia, mental retardation and epilepsy. In some cases, hemiplegic migraine attacks can be triggered by minor head ...
    • 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 ...