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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 ?
Dorothy will be very sadly missed by all her family and friends, would friends please meet for Service and Cremation at Mountsett Crematorium, Dipton on Tuesday 16th May at 11:00am, family flowers only please, a retiring collection will take place after the Service in aid of St Oswald's Hospice and the Great North Air Ambulance.
Sadly business has gone so bad that the shop will be vacated next year.
Beloved Mum, Nan, Great Grandma and Sister, who will be sadly missed by all.
FRANKLAND Betty Betty, dear sister, you will be sadly missed by all our family and always in our thoughts.
No doubt the May elections will sadly again showa very poor poll result.
ASHFORD Sheila Sadly passed away on 5th March 2019.
In loving memory of Joan who sadly passed away on 14th June 2011.
Sadly missed but always remembered by daughter Sheila, sons Ronald and the late George, daughterinlaw Edith, grandchildren Morag, Stephen, Angela, Claire, Andrea and all great grandchildren.
FREEMAN Spencer A much loved cousin who will be sadly missed.
Sadly passed away peacefully on Sunday 3rd February 2019.
Forever in our thoughts and still sadly missed so much by Elsie, Joan, daughter Linda and niece Debbie.
Too sadly missed to be forgotten Mam, brothers, sisters and families.