National Sleep Foundation

Chapter 5: Circadian Rhythm Sleep Disorders


How is advanced sleep phase disorder (ASPD) treated?

Treatment of ASPD is difficult and data are limited. While some studies demonstrate the success of evening light therapy (2,500 lux from 8:00 PM – 12:00 AM, or 4,000 lux from 8:00 PM or 9:00 PM to 11:00 PM),1-2 other studies demonstrate a lack of effect.3 No data exists on the efficacy of early morning melatonin administration.


  1. Campbell S, Dawson D, Anderson MW. Alleviation of sleep maintenance insomnia with timed exposure to bright light. J Am Geriatr Soc.1993;41:829-836.
  2. Murphy P, Campbell S. Enhanced performance in elderly subjects following bright light treatment of sleep maintenance insomnia. J Sleep Res. 1996;5:165-172.
  3. Suhner AG, Murphy PJ, Campbell SS. Failure of timed bright light exposure to alleviate age-related sleep maintenance insomnia. J Am Geriatr Soc. 2002;50:617-23.