RT Journal Article SR Electronic T1 INTERDISCIPLINARY CONSENUS ON THE MANAGEMENT OF IIH IN THE UK JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP e1 OP e1 DO 10.1136/jnnp-2016-315106.26 VO 87 IS 12 A1 Ghaniah Hassan-Smith A1 Susan Mollan A1 Brendan Davies A1 Simon Shaw A1 Bhawisha Swarupsinh Chavda A1 Anita Krishnan A1 Conor Mallucci A1 Nicholas Silver A1 Benjamin Wakerley A1 Alexandra Sinclair YR 2016 UL http://jnnp.bmj.com/content/87/12/e1.159.abstract AB Management of Idiopathic Intracranial Hypertension (IIH) is not standardised. A multidisciplinary Special Interest Group (SIG) was established to develop a uniform investigation and treatment strategy according to disease severity based on current literature and expert consensus.Methods A systematic literature review of “IIH”;“Benign IH” and “pseudotumour cerebri” was followed by a SIG meeting, to identify the population, interventions, controls and outcomes (PICO) questions. Discrepant views were reflected in a questionnaire disseminated though a modified Delphi approach to district general and tertiary hospital interdisciplinary specialists.Results 44/66 questionnaires were returned. 51% would image (CT/MRI) patients with definite papilloedema <24 hrs and 40% would image between 24–48 hrs. In these patients 84% would then proceed to venography (50:50, MRV:CTV), conducted within 48 hrs in 74% respondents.79% never diagnosed IIH in those with a lumbar puncture pressure <25 cm CSF. Referral for neurosurgical intervention was predominantly for visual deterioration (83%) with only 2% referring exclusively for headache management. Neurosurgical procedures varied: 48% ventriculoperitoneal shunting, 33% lumboperitoneal shunting, 5% optic nerve sheath fenestration, 14% other and 0% venous stenting. A consensus on follow-up times, according to papilloedema severity and visual function (perimetry), was obtained.Conclusions Evidence for IIH management is minimal. Consensus on many aspects of management was demonstrated which will help establish a practical guideline.