General information, not an individual diagnosis. Ask a healthcare professional if you are unsure about your situation.
Narcolepsy causes involuntary daytime sleep episodes. Sleepiness alone does not identify this condition.
Cataplexy is brief muscle weakness triggered by emotion. It points towards type 1 narcolepsy.
Type 2 has no cataplexy. Other explanations for daytime sleepiness must first be assessed.
Before testing, home actigraphy checks sleep timing and duration according to the centre’s instructions.
Overnight polysomnography precedes multiple sleep latency tests: recorded naps measure time to sleep and look for early REM sleep.
Ask about caffeine, nicotine and medicines before testing. Any medication interruption must be arranged by the team.
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