CAVEATS
Variables may have affected results
Among the study’s limitations: use of a single SSRI (other, more potent SSRIs might work better); location (southern Canada; benefits may differ in regions farther south); and exclusion of pregnant and breastfeeding women from the study population.
Furthermore, the trial duration was relatively short, and the investigators did not attain their preplanned sample size for the study. This limited the power to detect clinically significant seasonal treatment effects and differences between the fluoxetine and placebo groups, regardless of whether they received active phototherapy.
CHALLENGES TO IMPLEMENTATION
Commercial insurance doesn’t usually cover light therapy
Bright light therapy is fairly safe, and some evidence exists supporting its use in the treatment of nonseasonal MDD; however, the data for its use in this area are limited.10 Since few studies have tested light therapy for nonseasonal MDD, uncertainty remains about patient selection, as well as optimal dose, timing, and duration in the management of nonseasonal MDD.11 Although the associated risks are minimal, bright light therapy can lead to mania or hypomania; clinicians need to monitor for such effects when initiating therapy.3
Lastly, commercial insurance does not usually cover light therapy. The average price of the bright light devices, which are available in medical supply stores and online, ranges from $118 to $237.4,11 However, such devices are reusable, making the amortized cost almost negligible and perhaps negating this concern.12
REFERENCES
1. Lam RW, Levitt AJ, Levitan RD, et al. Efficacy of bright light treatment, fluoxetine, and the combination in patients with nonseasonal major depressive disorder: a randomized clinical trial. JAMA Psychiatry. 2016;73:56-63.
2. Weihs K, Wert JM. A primary care focus on the treatment of patients with major depressive disorder. Am J Med Sci. 2011;342:324-330.
3. Gelenberg AJ, Freeman CMP, Markowitz JC, et al. American Psychiatric Association practice guideline for the treatment of patients with major depressive disorder. 3rd ed. 2010. http://psychiatryonline.org/pb/assets/raw/sitewide/practice_guidelines/guidelines/mdd.pdf. Accessed July 5, 2016.
4. Lam RW, Tam EM. A Clinician’s Guide to Using Light Therapy. New York, NY: Cambridge University Press; 2009. www.ubcmood.ca/sad/SAD%20resources%20package%202009.pdf. Accessed July 5, 2016.
5. Tuunainen A, Kripke DF, Endo T. Light therapy for non-seasonal depression. Cochrane Database Syst Rev. 2004;2:CD004050.
6. Martiny K. Adjunctive bright light in non-seasonal major depression. Acta Psychiatr Scand Suppl. 2004;425:7-28.
7. Martiny K, Lunde M, Unden M, et al. Adjunctive bright light in non-seasonal major depression: results from clinician-rated depression scales. Acta Psychiatr Scand. 2005;112:117-125.
8. Hamilton M. A rating scale for depression. J Neurol Neurosurg Psychiatry. 1960;23:56-62.
9. Montgomery SA, Asberg M. A new depression scale designed to be sensitive to change. Br J Psychiatry. 1979;134:382-389.
10. Oldham MA, Ciraulo DA. Use of bright light therapy among psychiatrists in Massachusetts: an e-mail survey. Prim Care Companion CNS Disord. 2014;16(3). Epub 2014 Jun 26.
11. Sloane PD, Figueiro M, Cohen L. Light as therapy for sleep disorders and depression in older adults. Clin Geriatr. 2008;16:25-31.
12. Kripke DF. A breakthrough treatment for major depression. J Clin Psychiatry. 2015;76:e660-e661.
ACKNOWLEDGEMENT
The PURLs Surveillance System was supported in part by Grant Number UL1RR024999 from the National Center For Research Resources, a Clinical Translational Science Award to the University of Chicago. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Center For Research Resources or the National Institutes of Health.
Copyright © 2016. The Family Physicians Inquiries Network. All rights reserved.
Reprinted with permission from the Family Physicians Inquiries Network and The Journal of Family Practice. 2016;65(7):486-488.