title: A thunderclap headache.
authors.affiliation: Department of Neuroradiology, University Hospitals Birmingham NHS Foundation Trust, Edgbaston, Birmingham B15 2WB, UK. joe.leyon@nhs.net
authors.forename: Joe Joseph
authors.initials: JJ
authors.lastname: Leyon
authors.forename: Tarun
authors.initials: T
authors.lastname: Gupta
authors.forename: Venkataramanan
authors.initials: V
authors.lastname: Srinivasan
authors.forename: Latha
authors.initials: L
authors.lastname: Senthil
mesh_terms: D015901:Angiography, Digital Subtraction; D051270:Headache Disorders, Primary / Q000000981:diagnostic imaging* / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013345:Subarachnoid Hemorrhage / Q000150:complications* / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D020246:Venous Thrombosis / Q000150:complications / Q000000981:diagnostic imaging