tokens: Assessment of EDS includes a thorough sleep , medical , and psychiatric history , targeted clinical examination , and appropriate use of actigraphy to measure sleep duration and sleep - wake patterns , polysomnography to assess for associated conditions such as sleep - related breathing disorders or other factors that might disrupt nighttime sleep , multiple sleep latency testing to ascertain objective sleepiness and diagnose central disorders of hypersomnolence , and measurement of cerebrospinal fluid hypocretin-1 concentration .