Posterior reversible encephalopathy syndrome revealing Takayasu's arteritis.

Posterior reversible encephalopathy syndrome is a rare neuroradiologic condition associated with headache, seizures, altered sensorium, visual disturbances, and characteristic lesions on neuroimaging predominantly affecting the posterior regions of the brain. We report a 10-years-8-months-old girl who presented with headache, multiple seizures, and altered sensorium. Her blood pressure was 130/100 mmHg and left brachial pulse was not palpable. CT scan brain showed typical non-enhancing hypodensities in bilateral parieto-occiptal lobes. Prompt treatment of the hypertension led to rapid reversal of neurological symptoms. CT aortogram revealed aortoarteritis with bilateral renal artery stenosis.