A narcoleptic patient exhibiting hallucinations and delusion.

A female narcoleptic patient with persistent auditory hallucinations and delusion is reported. These psychotic symptoms appeared before the diagnosis of narcolepsy and before the use of pemoline and clomipramine. On admission to the Department of Neuropsychiatry at the Kurume University school of Medicine, the patient's auditory hallucinations were almost the same as the previous hallucinations. The patient's delusional state improved smoothly after haloperidol administration. After that, the patient related well socially. The persistent auditory hallucinations were correlated with rapid eye movement sleep symptoms during her disease process so that we concluded that her persistent auditory hallucinations and delusion of observation were due to narcoleptic symptoms.