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Seasonal affective disorder (SAD) is a type of depression that typically occurs each year during fall and winter. Use of a light therapy box can offer relief. But for some people, light therapy may be more effective when combined with another SAD treatment, such as an antidepressant or psychological counseling (psychotherapy).

Light therapy boxes for SAD treatment are also known as light boxes, bright light therapy boxes and phototherapy boxes. All light therapy boxes for SAD treatment are designed do the same thing, but one may work better for you than another.