NARCOLEPSY REVEALING A NEUROSARCOIDOSIS

A 37-year-old man developed excessive daytime sleepiness, sleep attack s and cataplexy revealing an hypothalamic tumour. Multiple Sleep Laten cy Tests (MSLT) were characteristics of narcolepsy. Tissue typing was positive for HLA DR2 and DQ1. Most cases of narcolepsy are idiopathic without any evidence of brain pathology. Although symptomatic narcolep sy may occur occasionally with diencephalic lesions. The relationship between narcolepsy with diencephalic lesions is unsettled and will be discussed.