[Differential diagnostic problems and polygraphic studies in a case of Pickwickian syndrome]

The case report of a male patient with the Pickwickian syndrome is presented. The results of the relevant neurophysiological examinations (polygraphic registration of EEG, electrocardiogram, respiration, thorax excursions, submental and intercostal electromyogram, electrooculogram) give an insight into the pathomechanisms and enable the differential diagnosis to be made between this condition and narcolepsy and also the Kleine-Levin syndrome; respiratory investigations (spirometry, hypercapnic ventilatory response: mouth occlusion pressure) make it possible to differentiate between the Pickwickian and Ondine's curse syndrome. The therapeutic management is discussed.