RT Journal Article SR Electronic T1 Trigeminal autonomic cephalgia caused by recurrent posterior scleritis JF Practical Neurology JO Pract Neurol FD BMJ Publishing Group Ltd SP 455 OP 457 DO 10.1136/practneurol-2016-001433 VO 16 IS 6 A1 Ali Alim-Marvasti A1 Jason Ho A1 Mark Weatherall A1 Maneesh Patel A1 Sheena George A1 Stuart Viegas YR 2016 UL http://pn.bmj.com/content/16/6/455.abstract AB A 40-year-old woman presented with a side-locked headache with autonomic features, which then switched sides before reverting to the original side. The atypical features of side swapping, partial response to indometacin and abnormal optic disc appearances ultimately led to a diagnosis of recurrent posterior scleritis. We discuss the differential diagnosis of trigeminal autonomic cephalgias and its secondary causes, and provide practical pointers for its investigation and management.