 | Sometimes used to treat skin conditions, mood disorders, and sleep disorders, light therapy consists of exposure to specific wavelengths of light for a prescribed amount of time. Visible violet light is used to activate a naturally occurring compound that kills acne-causing bacteria, while sunlight-mimicking light boxes and other infrared lights are used to treat seasonal affective disorder, a winter-related depressive disorder. What travel-related affliction is also treated with light therapy?
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