Depression, Seasonal Affective Disorder (SAD)

Seasonal Affective Disorder (SAD) is characterized by the onset of a depressive illness during certain months, particularly winter, when there is less natural sunlight. The depression generally lifts during spring and summer. SAD may be effectively treated with light therapy, but nearly half of those with SAD do not respond to light therapy alone. Antidepressant medication and psychotherapy can reduce SAD symptoms, either alone or in combination with light therapy.