| Diagnostic criteria |
| Criteria A-E must be met |
| A. The patient experiences at least two recurrent episodes of excessive sleepiness and sleep duration, each persisting for two days to five weeks. |
| B. Episodes recur usually more than once a year and at least once every 18 months. |
| C. The patient has normal alertness, cognitive function, behavior, and mood between episodes. |
D. The patient must demonstrate at least one of the following during episodes: - Cognitive dysfunction.
- Altered perception.
- Eating disorder (anorexia or hyperphagia).
- Disinhibited behavior (such as hypersexuality).
|
| E. The hypersomnolence and related symptoms are not better explained by another sleep disorder, other medical, neurologic, or psychiatric disorder (especially bipolar disorder), or use of drugs or medications. |
