{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,19]],"date-time":"2026-10-19T13:43:41Z","timestamp":1792417421677,"version":"4.4.0"},"reference-count":9,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"3","license":[{"start":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T00:00:00Z","timestamp":1777593600000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2026,5]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Side-locked headache is commonly regarded as a warning sign for secondary intracranial pathology; however, its musculoskeletal causes may be underrecognized. We report a series of seven patients with strictly unilateral headache consistently and temporally associated with the habitual clamping of a mobile phone between the neck and shoulder during hands-free multitasking. The headache was nonthrobbing, lacked migrainous or cranial autonomic features, and was reproducible with cervical palpation or sustained neck movements. Neurological examination and neuroimaging were normal in all cases. Cervical muscle tenderness, spasm, and trigger point\u2013mediated referred pain were prominent findings. Conservative management focusing on avoidance of the implicated posture, posture correction, and physiotherapy was associated with substantial improvement or complete resolution in all patients. This series highlights neck\u2013shoulder mobile phone clamping as a common posture-related trigger for cervicogenic or myofascial headache and underscores the importance of assessing smartphone-handling behaviors in patients with unilateral headache. These findings are hypothesis-generating and do not establish causality.<\/jats:p>","DOI":"10.4103\/aian.aian_79_26","type":"journal-article","created":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T05:00:10Z","timestamp":1780290010000},"page":"432-436","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":0,"title":["Side-locked Headache Associated with Habitual Neck\u2013Shoulder Mobile Phone Clamping: A Case Series"],"prefix":"10.4103","volume":"29","author":[{"given":"Sanjay","family":"Prakash","sequence":"first","affiliation":[{"name":"Department of Neurology, Smt B. K. Shah Medical Institute and Research Centre, Sumandeep Vidyapeeth, Vadodara, Gujarat, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Varoon","family":"Vadodaria","sequence":"additional","affiliation":[{"name":"Department of Neurology, Smt B. K. Shah Medical Institute and Research Centre, Sumandeep Vidyapeeth, Vadodara, Gujarat, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manju","family":"Yadav","sequence":"additional","affiliation":[{"name":"Department of Neurology, Smt B. K. Shah Medical Institute and Research Centre, Sumandeep Vidyapeeth, Vadodara, Gujarat, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2026,5,29]]},"reference":[{"key":"R1-20261019","doi-asserted-by":"crossref","first-page":"95","DOI":"10.1186\/s10194-016-0687-9","article-title":"Side-locked headaches: An algorithm-based approach","volume":"17","author":"Prakash","year":"2016","journal-title":"J Headache Pain"},{"key":"R2-20261019","first-page":"827","article-title":"Cervicogenic headache: An assessment of the evidence on clinical diagnosis, invasive tests, and treatment","volume":"29","author":"Bogduk","year":"2009","journal-title":"Cephalalgia"},{"key":"R3-20261019","doi-asserted-by":"crossref","first-page":"662","DOI":"10.1111\/j.1526-4610.2006.00632.x","article-title":"Myofascial trigger points, neck mobility, and forward head posture in episodic tension-type headache","volume":"47","author":"Fern\u00e1ndez-de-Las-Pe\u00f1as","year":"2007","journal-title":"Headache"},{"key":"R4-20261019","doi-asserted-by":"crossref","first-page":"575","DOI":"10.1589\/jpts.27.575","article-title":"The relationship between smartphone use and subjective musculoskeletal symptoms and university students","volume":"27","author":"Kim","year":"2015","journal-title":"J Phys Ther Sci"},{"key":"R5-20261019","first-page":"1","volume":"38","year":"2018","journal-title":"Cephalalgia"},{"key":"R6-20261019","doi-asserted-by":"crossref","first-page":"75","DOI":"10.1016\/S0003-6870(01)00043-6","article-title":"A field comparison of neck and shoulder postures in symptomatic and asymptomatic office workers","volume":"33","author":"Szeto","year":"2002","journal-title":"Appl Ergon"},{"key":"R7-20261019","doi-asserted-by":"crossref","first-page":"371","DOI":"10.1007\/s11916-003-0036-y","article-title":"The trigeminocervical complex and migraine: Current concepts and synthesis","volume":"7","author":"Bartsch","year":"2003","journal-title":"Curr Pain Headache Rep"},{"key":"R8-20261019","doi-asserted-by":"crossref","first-page":"900","DOI":"10.1080\/00140139.2021.1873423","article-title":"Influence of neck flexion angle on gravitational moment and neck muscle activity when using a smartphone while standing","volume":"64","author":"Tapanya","year":"2021","journal-title":"Ergonomics"},{"key":"R9-20261019","doi-asserted-by":"crossref","first-page":"103175","DOI":"10.1016\/j.ergon.2021.103175","article-title":"The effects of shoulder posture on neck and shoulder musculoskeletal loading and discomfort during smartphone usage","volume":"85","author":"Tapanya","year":"2021","journal-title":"Int J Ind Ergon"}],"container-title":["Annals of Indian Academy of Neurology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ovid.com\/10.4103\/aian.aian_79_26","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,19]],"date-time":"2026-10-19T13:05:13Z","timestamp":1792415113000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ovid.com\/10.4103\/aian.aian_79_26"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,5]]},"references-count":9,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2026]]}},"URL":"https:\/\/doi.org\/10.4103\/aian.aian_79_26","relation":{},"ISSN":["0972-2327","1998-3549"],"issn-type":[{"value":"0972-2327","type":"print"},{"value":"1998-3549","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,5]]},"assertion":[{"value":"2026-01-21","name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-04-15","name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}}]}}