Narcolepsy, a severe sleep disorder that typically emerges in adolescence, appears to be on the rise in the U.S. A new analysis of U.S. health care claims reports prevalence roughly 50% higher (1.6 per 2,000) than the upper limit cited in most prior studies (1 per 2,000), with the highest incidence in late adolescence and the early 20s. Pharmaceutical company ads that encourage readers to wonder why they are “tired all the time” and to take a “Narcolepsy Symptom Screener” test are an indication of the growing problem—and the growing market.



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