Which syndrome is characterized by hypersomnolence, compulsive hyperphagia, and hypersexuality?

Kleine-Levin syndrome is characterized by recurrent episodes of hypersomnolence, which is excessive sleepiness, along with other symptoms such as compulsive hyperphagia (compulsive eating) and hypersexuality. This rare sleep disorder primarily affects adolescents and can be triggered by factors like infections or stress. During episodes, individuals may sleep for an extended period, often up to 20 hours a day, and experience altered behaviors once they are awake, leading to the distinctive triad of symptoms. This combination of symptoms, especially the compulsive eating and hypersexuality, sets Kleine-Levin syndrome apart from other disorders, which do not exhibit the same pattern.

In contrast, narcolepsy is characterized mainly by sudden sleep attacks and cataplexy, obstructive sleep apnea involves pauses in breathing during sleep leading to significant daytime sleepiness, and acute insomnia disorder is primarily marked by difficulty falling or staying asleep rather than the unique behavior changes seen in Kleine-Levin syndrome.