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December is Seasonal Affective Disorder (SAD) Awareness Month

  • Writer: IHCRC
    IHCRC
  • Dec 8
  • 2 min read

Two people walking in winter darkness surrounded by trees

December is Seasonal Affective Disorder (SAD) Awareness Month, a time to remember that the holidays may not be happy for everyone due to the "winter blues," when some experience depression with fewer daylight hours.


WHAT IS "SAD?"

According to the National Institute of Mental Health (NIH), SAD is a recurrent, seasonal type of depression with symptoms during part of the year. For winter-pattern SAD, symptoms include:

  • Hypersomnia, or oversleeping

  • Overeating

  • Social withdrawal


Some people also experience summer-pattern SAD, which has these symptoms:

  • Insomnia, or trouble sleeping

  • Poor appetite

  • Restlessness

  • Anxiety

  • Aggressive behavior


Winter-pattern is more common than summer-pattern, and SAD occurs more often in women than men, according to the NIH. SAD is diagnosed when people experience symptoms in consecutive seasons, especially when symptoms seem to occur most often during those specific seasons.


Woman feeling sad in darkness

CAUSES AND TREATMENT

The NIH notes that more research still needs to be done on SAD, especially summer-pattern, but studies have shown that people with SAD may have:

  • Reduced levels of the brain chemical serotonin, which helps regulate mood.

  • Vitamin D deficiency, which people receive from food but also from sunlight.

  • Altered levels of melatonin, a hormone helping maintain a normal sleep cycle.


Treatment for these causes include:

  • Light therapy: When a person sits in front of a bright light box daily for about 30-45 minutes.

  • Therapy and counseling

  • Vitamin D

  • Antidepressant medication (when necessary)



DEPRESSION AND SADNESS

If you experience major life changes or disappointing events close to holidays, you may feel sad or depressed, unrelated to Seasonal Affective Disorder. If your sadness lasts more than two weeks, you may be depressed. According to the CDC, depression symptoms include:

  • Feeling sad, empty, or hopeless often or all the time.

  • Not wanting to do activities that used to be fun.

  • Unplanned weight change or changes in appetite.

  • Trouble falling asleep or staying asleep, or sleeping too much.

  • Feeling irritable, easily frustrated, or restless.

  • Lack of energy or feeling tired.

  • Feeling worthless or overly guilty.

  • Trouble concentrating, remembering things, or making decisions.



988 provides confidential support for anyone in emotional distress or experiencing a suicidal crisis—available 24/7.

The CDC recommends seeking treatment from a health care provider, especially if your symptoms do not go away, are getting worse, or affect your daily activities.


Help is also available immediately by calling or texting 988. Free, confidential support for anyone in emotional distress or experiencing a suicidal crisis is available 24/7.


SOURCES

 
 
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