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Light therapy

Light therapy is the use of a high-intensity fluorescent lamp (usually 10,000 lux) to treat certain types of depression that occur during the fall and winter months (seasonal affective disorder). These lamps are usually available in health food or lighting fixture stores.

Lamps used for light therapy are about 10 to 20 times as bright as ordinary indoor lighting. A person sits in front of the light for at least 30 minutes once or twice a day. Some people sit in the light for as long as 3 hours. A person can usually read, use a computer, or do other types of desk work while sitting in front of the light.

Author Jeannette Curtis
Author Caroline Rea, RN, BS, MS
Editor Kathleen M. Ariss, MS
Editor Susan Van Houten, RN, BSN, MBA
Associate Editor Tracy Landauer
Associate Editor Pat Truman
Primary Medical Reviewer Patrice Burgess, MD
- Family Medicine
Primary Medical Reviewer Adam Husney, MD
- Family Medicine
Primary Medical Reviewer Kathleen Romito, MD
- Family Medicine
Last Updated May 25, 2007

WebMD Medical Reference from Healthwise

Last Updated: May 25, 2007
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