[Concomitant narcolepsy and sleep apnea: report of a case].

A case of concomitant narcolepsy and obstructive sleep apnea evaluated in a sleep disorder center is reported. Tracheostomy decreased the frequency of the apneas but the clinical and polysomnographic features of narcolepsy remained on 3 and 6 months post-surgical follow-ups. These findings support the need for systematic use of all-night polysomnography and multiple sleep latency test in patients with excessive daytime sleepiness.