sleep paralysis« Back to Glossary IndexSleep paralysis is a transitional state between wakefulness and sleep, in which one is aware but cannot move, speak, or react. Related Articles: Guide for Sleep & Research Study CentersConsiderations for ProfessionalsClassification of HypersomniasAbout Related Sleep Disorders (Hypersomnias)Glossary: narcolepsyArticle Summary: Khan Z, Trotti LM. “Central Disorders of Hypersomnolence: Focus on the Narcolepsies and Idiopathic Hypersomnia.”Ask the Doctor: Narcolepsy vs Idiopathic HypersomniaSummary of Rationale Behind and Research Studies into L-carnitine as a Treatment for NarcolepsyIt’s a Fine Line Between Type 2 Narcolepsy and Idiopathic Hypersomnia… and It’s Getting Even Finer