Atypical aspects of hypertensive encephalopathy in childhood.

Four patients with hypertensive encephalopathy and misleading focal symptomatology are reported in order to point out the problems of differential diagnosis. The first patient, together with a classical syndrome of hypertensive encephalopathy, had peculiar EEG features consistent with a possible diagnosis of herpes simplex encephalitis. Case 2 presented with a complex clinical syndrome associating bizarre spells suggestive of a psychiatric condition with ocular symptoms pointing to an upper brain stem involvement. The third child was remarkable because of the presence of neuroradiological signs compatible with a space-occupying lesion of the posterior fossa not eventually found after a surgical exploration performed as an emergency procedure. The last patient had central nervous system signs in the context of a Guillain-Barré syndrome: in this case the central symptomatology would not fit the already described pattern of encephalomyelo-radiculo-neuropathy but had to be entirely ascribed to the ill controlled arterial hypertension.