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This is an excellent new review on the diagnosis and treatment of spontaneous intracranial hypotension from the team of neuroradiologists at Duke University.

Update on the Diagnosis and Treatment of Spontaneous Intracranial Hypotension.
Kranz PG, Malinzak MD, Amrhein TJ, Gray L.
Curr Pain Headache Rep. 2017 Aug;21(8):37. doi: 10.1007/s11916-017-0639-3.
Abstract
PURPOSE OF REVIEW:
The purpose of this study is to provide an update on recent developments in the understanding, diagnosis, and treatment of spontaneous intracranial hypotension (SIH).
RECENT FINDINGS:
SIH is an important cause of headaches caused by spinal cerebrospinal fluid (CSF) leaks, with an increasingly broad spectrum of clinical presentations and diagnostic findings. A simple conception of the condition as being defined by the presence of low CSF pressure is no longer sufficient or accurate. A number of etiologies for spinal CSF leaks have been identified, including the recent discovery of CSF-venous fistulas, and these various etiologies may require different diagnostic and therapeutic pathways in order to affect a cure. Familiarity with the spectrum of presentations and causes of SIH is critical to accurate and timely diagnosis and management. Challenges exist in both diagnosis and treatment, and require understanding of the underlying pathogenesis of the condition in order to appropriately select testing and treatment. Prospective studies are needed going forward in order to inform workup and guide treatment decisions.
PMID: 28755201
DOI: 10.1007/s11916-017-0639-3