How to Diagnose

In addition a complete medical history and physical examination, diagnostic procedures may include:

  • Combination of EDS and cataplexy provide for preliminary clinical diagnosis

Laboratory tests - to confirm diagnosis and plan treatment, including:

  • Overnight polysomnogram (PSG) - to determine the presence of EDS and perhaps other underlying causes of this symptom.
  • Multiple Sleep Latency Test (MSLT) - to measure sleep onset and how quickly rapid eye movement REM sleep occurs.
  • Genetic blood test - to measure certain antigens often found in people who have a predisposition to narcolepsy.
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