Mood Matters: What you need to know about SEASONAL AFFECTIVE DISORDER (S.A.D.)
Many people experience seasonal changes in feelings of well being and in energy, sleep patterns and
eating patterns, to a greater or lesser degree. The winter blues or February blahs are common. But some people experience powerful changes to the degree that it becomes a form of clinical depression, called Seasonal Affective Disorder (S.A.D.)
About 2 to 6% of Canadians will experience S.A.D. in their lifetime. Another 15% experience a milder form of S.A.D.
Adults are at a higher risk of S.A.D. than children or teenagers. After the age of 50, the risk of S.A.D. starts to decline.
Women are up to eight times as likely as men to report having S.A.D.
People in northern countries are more likely to experience S.A.D. than those who live closer to the equator because the days get shorter the further north you go.
S.A.D. tends to run in families — most individuals with S.A.D. have at least one close relative with a history of depression.
A variety of psychological, social and biological factors may contribute to S.A.D. Some known factors are:
Discuss all of your symptoms with your doctor and describe how they are affecting your life (e.g. sleeping several extra hours per day and missing work/school/appointments). Your doctor can suggest or provide appropriate therapy. Make sure to discuss all of the available treatments and medications and their benefits and side effects before making any decisions
Light therapy has been found to have an anti-depressant effect in 70% of people with S.A.D. Most people find relief within two weeks of beginning light therapy.
Light therapy involves exposure to bright light under specific conditions. The light can be delivered through special lights or through a light visor. Daily treatment sessions usually last from 15-30 minutes. Because homemade light fixtures have the potential to damage the eyes, it is best to purchase approved light therapy units.
A few mild side effects have been reported, including eyestrain, headaches, irritability and insomnia, the latter occurring if treatment is taken too late in the day.
Avoid self-diagnosis and self-treatment. There may be existing medical conditions that can interfere with light treatment. Consult your doctor. Be aware of eye problems or medications taken with photosensitivity as a side effect.
Other treatment options include psychotherapy and antidepressant medication. Your doctor will discuss this with you. Complementary treatment, such as peer support groups or other support programs, may also be helpful.
Finally, additional treatments such as massage, mindfulness meditation, shiatsu, therapeutic touch, aromatherapy, tai chi, Pilates and yoga can also help to improve wellness.
Canadian Consensus Guidelines for the Treatment of Seasonal Affective Disorder,
edited by Raymond W. Lam and Anthony J. Levitt, Clinical and Academic Publishing (1999)
Don’t be SAD,Your Guide to Conquering Seasonal Affective Disorder, Celeste A. Peters, Script Publishing Inc. (1994)
Winter Blues, Norman E. Rosenthal, The Guilford Press (1998)