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  • Title: Idiopathic intracranial hypertension: Clinical nosography and field-testing of the ICHD diagnostic criteria. A case-control study.
    Author: Yri HM, Jensen RH.
    Journal: Cephalalgia; 2015 Jun; 35(7):553-62. PubMed ID: 25228684.
    Abstract:
    AIMS: The aims of this article are to characterize the headache in idiopathic intracranial hypertension (IIH) and to field-test the ICHD diagnostic criteria for headache attributed to IIH. MATERIALS AND METHODS: We included 44 patients with new-onset IIH. Thirty-four patients with suspected but unconfirmed IIH served as controls. Headache and other IIH-related symptoms were assessed by a detailed standardized interview. In participants referred before diagnostic lumbar puncture (n = 67), we recorded headache intensity before and after cerebrospinal fluid (CSF) withdrawal. RESULTS: Headache in patients with IIH was daily occurring in 86%, focal in 84% and pulsating in 52%. Aggravation of headache by coughing or straining and relief after CSF withdrawal were significantly more frequent in patients than in controls (p ≤ 0.002). From the ICHD-2 to the ICHD-3 beta classification the sensitivity increased from 60% to 86% whereas the specificity decreased from 86% to 53%. Based on our data the headache criteria can be revised to increase sensitivity to 95% and specificity to 65%. CONCLUSION: Aggravation of headache by coughing or straining, relief after CSF withdrawal, retrobulbar pain and pulsatile tinnitus may suggest intracranial hypertension. Based on data from a well-defined IIH cohort, we propose a revision of the ICDH-3 beta diagnostic criteria with improved clinical applicability and increased sensitivity and specificity.
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