Bright light treatment of winter depression: morning versus evening light |
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| Authors: | D H Avery A Khan S R Dager G B Cox D L Dunner |
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| Affiliation: | Department of Psychiatry and Behavioral Sciences, School of Medicine, University of Washington, Seattle. |
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| Abstract: | In a randomized crossover design, 7 patients with winter depression were treated with 7 d of bright morning light (0600 to 0800) and 7 d of evening light (2000 to 2200). Bright lights in the morning significantly reduced the Hamilton Rating Scale for Depression (HRSD) score (18.4 to 5.0); the bright light in the evening moderately decreased the HRSD score (19.4 to 15.1). The improvement in the HRSD score was significantly greater with morning light than with evening light. |
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| Keywords: | Key words depression seasonal affective disorder light therapy |
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