Neck pain and cervical musculoskeletal dysfunction are common among persons with self-reported sinus headaches (SRSH). The study published in The Journal of manual & manipulative therapy found neck pain in over 83% of SRSH patients, and greater cervical segmental dysfunction and neck flexor endurance when compared to a control group.
Petersen SM, Jull GA, Learman KE. Self-reported sinus headaches are associated with neck pain and cervical musculoskeletal dysfunction: a preliminary observational case control study. J Man Manip Ther. 2019 Sep;27(4):245-252. doi: 10.1080/10669817.2019.1572987. Epub 2019 Feb 4. PMID: 30935330; PMCID: PMC7025697.