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  1. KLS Foundation - One in a Million People Worldwide live with KLS

    KLS is an ultra-rare and complex neurological disorder characterized by recurring periods of excessive amounts of sleep, altered behavior, and “derealization” – a reduced understanding …

  2. Kleine–Levin syndrome - Wikipedia

    Kleine–Levin syndrome (KLS) is a rare neurological disorder characterized by persistent episodic hypersomnia accompanied by cognitive and behavioral changes.

  3. Kleine-Levin Syndrome: Symptoms, Causes & Outlook

    Jul 13, 2022 · Kleine-Levin syndrome (KLS) is a rare condition that causes you to sleep for long periods of time. People diagnosed with KLS experience episodes where they sleep up to 20 …

  4. Kleine-Levin Syndrome (KLS) | Center for Narcolepsy ...

    Kleine-Levin Syndrome (“KLS”) is a rare sleep disorder characterized by recurrent episodes of hypersomnia lasting one to 3 weeks, associated with behavioral/cognitive disturbances, …

  5. Kleine-Levin Syndrome: Symptoms, Diagnosis, and Treatment ...

    Nov 16, 2023 · Kleine-Levin Syndrome is a rare hypersomnia disorder that primarily affects teenage boys. Learn about symptoms, causes, risk factors, and treatment for KLS.

  6. Kleine-Levin Syndrome: Symptoms, Causes, and More - Healthline

    Nov 14, 2018 · Kleine-Levin syndrome (KLS) is a rare disorder that causes recurring periods of excessive sleepiness. In some cases, this means up to 20 hours a day are spent sleeping.

  7. Kleine-Levin Syndrome (KLS) - StatPearls - NCBI Bookshelf

    Aug 8, 2023 · Kleine–Levin syndrome (KLS), also known as "Sleeping beauty syndrome," is a rare yet devastating parasomnia that includes recurrent episodes of hypersomnia, along with …