The Lewisham and Greenwich idiopathic intracranial hypertension cohort: a retrospective study

Introduction Idiopathic intracranial hypertension (IIH) is a syndrome of raised intracranial pressure without hydrocephalus or mass lesion and normal cerebrospinal fluid (CSF) constituents. IIH was defined using the modified Dandy criteria.2 Data were collected retrospectively and included patient demographics, body mass index, number of admissions for IIH, visual assessment at diagnosis and most recent follow-up, treatment, and medical and psychiatric comorbidity. The annual hospital costs of IIH rose 50 times over a 6-year period, from ?