Seasonal Affective Disorder describes depression that varies with the amount of sunlight. With less sunlight, one may get depressed. To have SAD, this would occur every year, and the depression would be more than "winter blues." During periods of greater sunlight, a degree of mania may occur, but that is not a prerequisite for this illness. In rare cases, the symptoms are reversed, with depression occurring during periods of increased sunlight.
American Family Physician: Seasonal Affective Disorders
An in depth, clinical discussion of this disorder.
Ayurveda Regime for Winter Depression
Details treatment recommended by ayurvedic medicine physicians.
Brighten Your Life
An online book by a psychiatrist about bright light therapy for depression and sleep.
Center for Environmental Therapeutics
Non-profit organization dedicated to education and research on treatments for SAD, nonseasonal depression and circadian rhythm sleep disorders. Includes FAQ and self-assessment tool.
Clinical Trials: Seasonal Affective Disorder
Solicits volunteers for current NIMH studies.
Here to Help: Seasonal Affective Disorder
Fact sheet includes suggested treatments, and advice on buying a lightbox.
Mayo Clinic: Seasonal Affective Disorder (SAD)
Describes symptoms, screening and treatment options.
Negative Ions Create Positive Vibes
Discusses negative ions as an alternative therapy to depression.
An interview with researcher Norman Rosenthal, MD.
Seasonal Affective Disorder Association
An international support organization based in the United Kingdom. Provides information and membership details.
Seasonal Affective Disorder: Winter Depression
Discusses the diagnosis and treatment of this disorder. Covers related mood and sleep problems.
Society for Light Treatment and Biological Rhythms
An international organization promoting research, professional development and clinical applications, with details of meetings and membership.
WebMD.com : Talk Therapy for Seasonal Affective Disorder?
Discusses research study of cognitive behavioral therapy's effect on this disorder.
What is Seasonal Affective Disorder?
Pioneering research psychiatrist Norman E. Rosenthal presents an article on SAD.
Yahoo Groups: S-A-D
Message board for sufferers.
Anyone Got a Light?
Discusses phototherapy as a replacement for diminished light. (BBC) (December 04, 2003)
Seasonal Affective Disorder: Let the Sun Shine In When its Dark Outside
A Salon.com article by a physician. (January 03, 2000)