Narcolepsy and the Seasons Emerging research supports the theory that the onset of narcolepsy is more common at certain times of the year. By Cassandra Perez N arcolepsy is a chronic sleep disorder characterized by overwhelming daytime drowsiness and sudden attacks of sleep. The causes and triggers of this neurological condition are unknown; however, emerging research points to two infectious agents that may be involved in triggering the condition. Narcolepsy onset often follows a seasonal pattern of higher rates in spring and early summer following winter upper airway infection season. 1 Also, researchers are investigating a 18 • sleepreviewmag.com SR_18_21_Narcolepsy.indd 18 possible link between narcolepsy onset and streptococcal infec- tion. 1 This article will explore the research that provides support for the possible association between the seasons and the onset of narcolepsy as well as the implications for patients and sleep medicine professionals. Research Study: Narcolepsy in Beijing A 2011 study published in the Annals of Neurology showed NOVEMBER 2015 10/22/15 8:33 PM