The exact cause of Kleine-Levin syndrome is not known.

Does not meet the criteria for either having autism, schizophrenia, or Kleine-Levin syndrome.

Some researchers speculate that Kleine-Levin syndrome may be an autoimmune disorder.

There is no definitive treatment for Kleine-Levin syndrome.

In some cases, the symptoms associated with Kleine-Levin syndrome eventually disappear with advancing age.

Imipramine has additional indications for the treatment of panic attacks, chronic pain, and Kleine-Levin syndrome.

Symptoms of Kleine-Levin syndrome are cyclical.

In individuals with autism, schizophrenia, and certain physical disorders (such as Kleine-Levin syndrome), nonnutritive substances may be eaten.

Kluver-Bucy syndrome, Kleine-Levin syndrome, and many more neuro-degenerative diseases can cause hypersexual behavior.

In 1862, Brière de Boismont provided an early description of what would later become known as Kleine-Levin syndrome (KLS).

Kleine-Levin syndrome is named after Willi Kleine and Max Levin, who reviewed the syndrome in 1925 and 1936 respectively.

Several neurological conditions such as Alzheimer's disease, various types of brain injury, Klüver-Bucy syndrome, Kleine-Levin syndrome, and many more neuro-degenerative diseases can cause hypersexual behavior.

Kleine-Levin syndrome, KLS, or Sleeping Beauty syndrome is a neurological disorder characterized by recurring periods of excessive amounts of sleeping and eating.

There are some similarities between Kleine-Levin syndrome and bipolar disorder, and lithium and carbamazepine are reported to be beneficial in some cases in warding off or shortening episodes.

It is thought that symptoms of Kleine-Levin syndrome may be related to malfunction of the portion of the brain that helps to regulate functions such as sleep, appetite, and body temperature (hypothalamus).

Disorders such as diabetes, Kleine-Levin Syndrome (a malfunction in the hypothalamus), the genetic disorders Prader-Willi Syndrome and Bardet Biedl Syndrome can cause hyperphagia (compulsive hunger).

Online instruction allows Jonathan Brett, a 16-year-old from West Hempstead who suffers from a rare sleeping disorder known as Kleine-Levin Syndrome, to take courses in Advanced Placement American history and English.

Whereas narcolepsy is associated with cataplexy and sleep-onset REM episodes, and Kleine-Levin syndrome is associated with megaphagia (compulsive food cravings) and hypersexuality, idiopathic hypersomnia has no such dramatic associated features, except perhaps sleep drunkenness.