Jet Lag Syndrome

**Definition:** A chronobiologic disorder resulting from rapid travel across a number of time zones, characterized by insomnia or hypersomnolence, fatigue, behavioral symptoms, headaches, and gastrointestinal disturbances. (From Cooper, Sleep, 1994, pp593-8)

**Tree numbers:** - C10.281.440 - C10.886.425.200.500 - C23.888.914.500 - F03.870.400.200.500 - I03.883.855.500

**Synonyms:** - Jet Lag - Time Zone Change Syndrome - Time Zone Syndrome