In this article from December 2015, Peter G Kranz, Teerath P Tanpitukpongse, Kingshuk Roy Choudhury, Timothy J Amrhein, and Linda Gray determine the proportion of patients with spontaneous intracranial hypotension (SIH) who had a cerebrospinal fluid (CSF) pressure >6 cm H2O and to investigate the clinical and imaging variables associated with CSF pressure (PCSF) in this condition.