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Risk factors
By Mayo Clinic staffFactors that may increase your risk of seasonal affective disorder include:
- Being female. Seasonal affective disorder is diagnosed more often in women than in men, but men may have symptoms that are more severe.
- Living far from the equator. Seasonal affective disorder appears to be more common among people who live far north or south of the equator. This may be due to decreased sunlight during the winter, and longer days during the summer months.
- Family history. As with other types of depression, those with seasonal affective disorder may be more likely to have blood relatives with the condition.
- Having clinical depression or bipolar disorder. Symptoms of depression may worsen seasonally if you have one of these conditions.
References
- Saeed SA, et al. Seasonal affective disorder. http://www.uptodate.com/home/index.html. Accessed July 8, 2011.
- Seasonal pattern specifier. In: Diagnostic and Statistical Manual of Mental Disorders DSM-IV-TR. 4th ed. Arlington, Va.: American Psychiatric Association; 2000. http://www.psychiatryonline.com. Accessed July 8, 2011.
- Ravindran AV, et al. Complementary and alternative medicine treatments. Canadian Network for Mood and Anxiety Treatments (CANMAT) clinical guidelines for the management of major depressive disorder in adults. Journal of Affective Disorders. 2009;117:S54.
- Sarris J, et al. Kava and St. John's wort: Current evidence for use in mood and anxiety disorders. Journal of Alternative and Complementary Medicine. 2009;15:827.
- Iovino N, et al. Second-tier natural antidepressants: Review and critique. Journal of affective disorders. 2011;3:343.
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