Positive Sleep State Misperception Mimicking Hypersomnia

Received November 10, 2015 Revised December 10, 2015 Accepted December 14, 2015 Address for correspondence Ki-Hwan Ji, MD Department of Neurology, Busan Paik Hospital, Inje University College of Medicine, 75 Bokji-ro, Busanjin-gu, Busan 47392, Korea Tel: +82-51-890-8769 Fax: +82-51-890-6130 E-mail: kihwanji@gmail.com A condition of underestimation of sleep is classified as paradoxical insomnia or sleep state misperception. However, overestimation of sleep, so called positive sleep state misperception has not been clearly described. Here we report a middle-aged woman with positive sleep state misperception who presented excessive sleepiness mimicking hypersomnia. J Sleep Med 2015;12(2):64-66