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Seasonal affective disorder (SAD) is a mood disorder subset in which people who typically have normal mental health throughout most of the year exhibit depressive symptoms at the same time each year. [1] [2] It is commonly, but not always, associated with the reductions or increases in total daily sunlight hours that occur during the winter or ...
About 5% of the population has seasonal affective disorder, or SAD, a type of depression that occurs as daylight hours decrease in the fall. About 10 to 20% suffer from a mild form of SAD.
There are two ways a light box helps with seasonal affective disorder. First, mimicking outdoor light corrects the internal clock thrown out of sync from shorter days in winter.
Here are the signs, symptoms, and treatment options for seasonal affective disorder (SAD), including light box therapy.
A man taking a nap in the spring. Springtime lethargy is the state of fatigue, lowered energy, or depression associated with the onset of spring. Such a state may be caused by a normal reaction to warmer temperatures, or it may have a medical basis, such as allergies or reverse seasonal affective disorder. [1]
Norman E. Rosenthal is an American author, psychiatrist and scientist who first described seasonal affective disorder (SAD), and developed light therapy as a treatment. Rosenthal was born and educated in South Africa but moved to the United States to complete his medical training.
Seasonal affective disorder is a form of depression with serious symptoms, like constant low energy and social isolation. Here are expert-approved ways of coping.
A mood disorder, also known as an affective disorder, is any of a group of conditions of mental and behavioral disorder [2] where the main underlying characteristic is a disturbance in the person's mood. [3] The classification is in the Diagnostic and Statistical Manual of Mental Disorders (DSM) and International Classification of Diseases (ICD).