Assessment
Patient History
Ask about history of EDS and difficulty falling asleep, meeting work or school schedules, and ability to maintain good interpersonal relationships
Laboratory Tests That May Be Ordered
Sleep phase melatonin secretion levels from serial plasma or saliva samples can be monitored; normal plasma values of melatonin are 0.17–0.43 nmol/L
Other Diagnostic Tests/Studies
A sleep log is kept by the patient for clinician evaluation of sleep/wake schedules
Polysomnography is performed when the patient is asked to keep a conventional sleep schedule and again during the patient’s normal, unconstrained schedule
Actigraphy, during which an Actigraph is worn to monitor movement, may be performed to monitor sleep patterns and circadian rhythms