Symptomatic idiopathic intracranial hypertension triggered by Ramadan intermittent fasting: a case report
Abstract
BACKGROUND: Idiopathic intracranial hypertension (IIH) is a disorder that primarily affects obese women of reproductive age. The exact pathogenesis of IIH is unknown though multiple etiologies have been proposed.
CASE PRESENTATION: We report a case of IIH triggered by first-time Ramadan intermittent fasting (RIF) in an 18-year-old woman. Our patient developed new onset headaches, diplopia, and pulsatile tinnitus with examination notable for bilateral papilledema and lumbar puncture revealing an elevated opening pressure. Her symptoms resolved after cessation of RIF, apart from persistent left sided tinnitus which later resolved with acetazolamide administration.
CONCLUSION: This case report uniquely illustrates that RIF may provoke symptomatic IIH. We hypothesize that a decreased concentration of glucagon-like peptide-1 (GLP-1) induced by fasting results in decreased GLP-1 receptor activation in the choroid plexus, allowing for increased CSF secretion into the ventricles invoking increased intracranial pressure (ICP). This theoretical mechanism provides further insight as to the possible underlying pathophysiology of IIH.
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