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seasonal affective disorder

a mood disorder characterized by depression, extreme lethargy, increased need for sleep, overeating, and carbohydrate craving. It recurs each year in one or more specific seasons, most commonly the winter months, and is hypothesized to be related to melatonin levels.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


Abbreviation for seasonal affective disorder.
Farlex Partner Medical Dictionary © Farlex 2012


seasonal affective disorder
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

seasonal affective disorder

A clinical form of depression with an onset in the late fall and remission in the spring; female:male ratio, 2:1.

Uncertain; reduced daily sunlight causes a drop in serotonin; PET scan data has linked depression to an increased in blood flow through the anterior limbic system, which may ultimately lead to hypoactivity; melatonin is decreased in women in summer and unchanged in men.
Some SAD patients respond to high-intensity light, which alters the circadian rhythm, a therapy that is most effective in the morning; a light intensity of 10,000 lux viewed at close range may reset the biological clock.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


Seasonal affective disorder, see there.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.


Abbreviation for seasonal affective disorder.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Seasonal affective disorder (SAD)

Amooddisorder characterized by depression during the winter months. An estimated 11 million Americans experience SAD.
Mentioned in: Phototherapy
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.


Abbreviation for seasonal affective disorder.
Medical Dictionary for the Dental Professions © Farlex 2012

Patient discussion about SAD

Q. I may be healthier now, but miserable… I’ve not been smoking for a whole month (my longest period in the last decade), and I do feel a bit better physically, but it seems that I lost the joy of life – I don’t go out with my friends any more (because they’re all smokers), I envy other smokers, and generally I feel nervous and dull. Will it be like that forever or is there hope?

A. Well, try to think about what are you missing? The foul smell? The yellow teeth? The feeling of suffocating next morning? Whenever you feel longing to cigarettes, try to think again why you stopped smoking- and it’d help you to keep with it.

Q. i get in to depression suddenly from a very calm mood. I get in to depression suddenly from a very calm mood. I am having a high mood swing for nearly a year. Sometimes I become crazy and start to jump on the roads. The other minute I do remember something from past and go in to deep depression. Due to this continuous change in my mood I am not able to concentrate on my studies. With this behavior I have lost some of my good friends too. This has put me in continuous stress and I have almost forgotten my good night sleep. My friends say that I am a bipolar….

A. Rohan,
The others are right, it would be benificial to you to seek professional help... You are saying that you have things in your past that are causing you stress, those things need to be worked through with a professional. You do not hve to continue suffering... Seek a proper diagnosis and you will get treatments that can help you feel much better...

Q. I’m often getting mood swings and depression. I’m fresher to my college. I’m often getting mood swings and depression. I don’t have close friend in this college, to share my thoughts. And I think there’s no point in life. And I don't want to do anything. Help me.

A. Well, depression and mood swings are common to all. So don’t worry about that. You need to talk to someone who is close to you and try to talk with your doctor, and a small amount of meds will help out a lot and won’t make you sick. Good luck!!!

More discussions about SAD
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References in periodicals archive ?
Jovan Grujic, anengineer (Figure 6), was in charge of development of technical and technological documentation of production and control of medical devices for the company "DES" Novi Sad. During 1984 a complete technological documentation and samples of external fixator were made according to the system "Hoffman".
A small study from the University of Copenhagen found that people with SAD showed seasonal differences in the way they regulate the serotonin compared to those without the disorder.
Tracy Harrison said: "Tragic news - thoughts with his family." And Vicky Ovenden wrote: "How sad. Bless him - thoughts are with his family at this tragic time."
1997 onward the development agenda has given shape to the SAD ideology.
Using a study of identical twins raised separately, SAD researchers have determined that genetics are nearly as influential as environment and psychology combined--47% to 53%, respectively.
Michelle Lewis: "Aw how sad they had so little time together as man and wife but how wonderful they had their wedding.
Elkin, executive director of UMC's Center for the Advancement of Youth, agrees that it's the pattern each winter that must be recognized to identify SAD. "The symptoms have to be significant and impairing for the past two years and must get worse during the winter and get better after that season," he said.
Grewal said that it was strange that a person accused of having relations with drug lords and arms dealers was demanding action against the SAD. He said that the state Congress was trying to politicise narco- terrorism imposed from across the border out of sheer frustration after facing public rejection.
Only one HPLC method has been cited in the literature for determination of SAD and ASC in their binary mixture [24].
"This novel research may eventually help identify people at risk for SAD and, looking forward, may phenotype the SAD patients most likely to respond to different treatments such as light or antidepressant medication," he agreed.
The comparison of different statistical models on their powers for fitting SAD has been well quantified in recent studies (Walker and Cyr 2007; Du and Zhou 2008; Gao et al.
"But no matter what, sometimes you always go maybe in a dark room and drink a beer and sing a sad song and that's what I'm going to do, because I love it," she concluded before launching into her 2017 hit "Tin Man."