The end of Daylight Saving Time is typically a trigger for cluster headaches. Cluster headache attacks can occur every day for six to eight weeks and then go away in a cluster cycle. The theory is that you can actually trigger a cycle by switching the time with Daylight Saving Time. CNN: Why does Daylight Saving Time have such an impact? It’s important to realize that it’s not just Daylight Saving (Time) changes that can trigger these attacks, even changing time zones can trigger cluster headaches.

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Persons: Rajkumar Dasgupta, Catherine McQueen, Dasgupta, it’s Organizations: CNN, University of Southern California Keck School of Medicine, Daylight Locations: Los Angeles