• Jeppe Hvedstrup, Amin Faisal Mohammad FM Danish Headache Center and Department of Neurology, Rigshospitalet-Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Cop, Anders Hougaard, Håkan Ashina, Casper Emil Christensen, Larsson Henrik Bo Wiberg HBW Functional Imaging Unit, Department of Clinical Physiology, Nuclear Medicine and PET, Rigshospitalet-Glostrup, Faculty of Health and Medical , Messoud Ashina, and Schytz Henrik Winther HW Danish Headache Center and Department of Neurology, Rigshospitalet-Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Co.
• Danish Headache Center and Department of Neurology, Rigshospitalet-Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
• J Headache Pain. 2020 May 27; 21 (1): 57.

BackgroundNeck pain in migraine patients is very prevalent between and during migraine attacks, but the underlying mechanism behind neck pain in migraine is unknown. The neck muscle rectus capitis posterior minor muscle (RCPmi) may be important since it is connected to the occipital dura mater. In this study, we examined the RCPmi volume in migraine patients and compared with controls.MethodsWe conducted a cross-sectional MRI study examining muscle volume in 40 episodic migraine patients and 40 controls in preexisting images from prior studies. Three-dimensional T1 weighted sequences were collected with a 3.0 T MRI Scanner. The volume of RCPmi was examined by manually tracing the muscle circumference with Horos medical image viewer. The observer was blinded to participant information. No information regarding neck pain status during or between migraine attacks were available.ResultsThe mean RCPmi volume was 1.22cm3 in migraine patients and 1.17cm3 in controls (p = 0.549). We found no differences in RCPmi volume on the pain side vs. the non-pain side (p = 0.237) in patients with unilateral migraine. There were no association between the muscle volume and years with migraine, headache or migraine frequency, age or BMI.ConclusionsWe found no difference in RCPmi volume between migraine patients and controls, suggesting no structural RCPmi pathology in migraine.

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