Seasonal affective disorder
What is Seasonal Affective Disorder (SAD)?
Many people feel more cheerful in summer than they do in winter, but for those with the mental condition Seasonal Affective Disorder the difference can be dramatic.
Seasonal Affective Disorder (aptly known as ‘SAD’) is a form of depression which strikes only in the autumn and winter months. Among the symptoms experienced by sufferers are:
- extreme tiredness and lack of energy;
- needing more sleep;
- increased appetite; and
- weight gain.
Once spring and summer come along, those affected feel perfectly well and normal.
What causes SAD?
SAD is believed to be due to the shorter hours of daylight in the winter months. Although we don't fully understand why shorter days can cause depression, it seems that the brain's chemistry can be affected by light.
How can it be treated?
Research has shown that an effective form of treatment for SAD is light therapy. This involves exposing patients to a bright light from a specially designed light box. Often as little as 30 minutes a day will produce a marked improvement in mood and general well-being after a few days. It is important that those undergoing treatment keep their eyes open when exposed to the light. The ultra-violet part of light (which causes sunburn and possible skin cancers) can be screened out and the treatment is therefore very safe.
Some sufferers from SAD may also benefit from more conventional treatments for depression such as antidepressant medications or counselling. Sometimes increased exercise and spending as much time as possible out of doors will help those with a mild attack of SAD.
Last Reviewed: 12 October 2004
Sponsored links
