Diagnosis

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.