Seasonal affective disorder (SAD) is a type of depression with a recurring seasonal pattern, with symptoms most often starting in the late fall and early winter and going away in the spring and summer. The risk of SAD is higher in people who live far from the equator and those with a personal or family history of depression. Women are more likely than men to develop SAD, and younger people have a higher risk than older ones.
Types of treatment that have been studied for SAD include medication (antidepressants), psychotherapy (such as cognitive behavioral therapy, CBT), light therapy, and dietary supplements (such as vitamin D).
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NCCIH has provided this material for your information. It is not intended to substitute for the medical expertise and advice of your health care provider(s). We encourage you to discuss any decisions about treatment or care with your health care provider. The mention of any product, service, or therapy is not an endorsement by NCCIH.Last Updated: June 2019
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