Kleine-Levin syndrome  

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Kleine-Levin Syndrome or KLS (also known as Sleeping Beauty Syndrome) is a neurological disorder characterized by recurring periods of excessive amounts of sleep and altered behavior. At the onset of an episode the patient becomes drowsy and sleeps for most of the day and night (hypersomnolence), waking only to eat or go to the bathroom. When awake, the patient’s whole demeanor is changed, often appearing “spacey” or childlike. They also experience confusion, disorientation, complete lack of energy (lethargy), and lack of emotions (apathy). Individuals are not able to attend school or work or care for themselves. Most are bedridden, tired, and uncommunicative even when awake.

Most patients report that everything seems out of focus, and that they are hypersensitive to noise and light. In some cases, food cravings (compulsive hyperphagia) are exhibited. Instances of uninhibited hypersexuality during episodes (mostly males) and instances of depression (mostly females) have also been reported. Most cases of Kleine-Levin syndrome are seen in teenage boys.

Unless indicated otherwise, the text in this article is either based on Wikipedia article "Kleine-Levin syndrome" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on research by Jahsonic and friends. See Art and Popular Culture's copyright notice.

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