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I experience advanced sleep phase disorder (ASPD) in addition to SAD. My understanding of SAD is to treat it with morning light. My understanding of ASPD is to treat it with evening light. Which time of the day should I schedule my 30-minute light box treatment? | Center for Environmental Therapeutics
A reader asks: I experience advanced sleep phase syndrome (ASPD) in addition to SAD. My understanding of SAD is to treat it with morning light. My