Mood and Behavioral Disorders

What is SAD? The Seasonal Affective Disorder

What is seasonal affective disorder (SAD)?

Do you notice feeling more down and having less energy when the weather changes and the days are shorter? You’re not alone! Many people go through these short periods of time where they notice a change in their mood and behaviors, typically during the colder months. 

SAD is called Seasonal Affective Disorder (SAD) and it is a type of depression where your mood and behavior significantly change whenever the seasons change. 

SAD Symptoms

The symptoms of SAD typically occur during the fall and winter months, where there is less sunlight, and while it is less common, some people can experience SAD in the summer. Most people consider these symptoms as “winter blues”, but sometimes these mood changes and symptoms can affect an individual’s feelings, thoughts, and daily functioning. 

The SAD symptoms can be distressing and overwhelming and interfere with daily activities, but it is treatable. While millions of adults may suffer from SAD, it is more common among women than men and is more common in those living in colder temperatures

It is also more common in people with other mental disorders such as major depressive disorder or bipolar disorder, especially bipolar to disorder which is associated with recurrent depressive and hypomanic episodes.

Early Signs and Symptoms of SAD

SAD is a type of depression characterized by its recurrent seasonal pattern with symptoms lasting about 4 to 5 months per year. SAD disorder is identified as a Major Depressive Disorder with Seasonal Pattern. The signs and symptoms of SAD or closely associated with major depression and some specific symptoms that differ based on the season. Symptoms can vary from mild to severe and not everyone with SAD will experience all the symptoms listed below.

Symptoms of seasonal affective disorder may include:

  • Loss of interest or pleasure in activities once enjoyed
  • Feeling sad or having a depressed mood most of the day, nearly every day
  • Changes in appetite or weight
  • Changes or difficulty with sleep usually sleeping too much
  • Loss of energy or increased fatigue
  • Feeling sluggish or agitated
  • Feeling worthless or hopeless
  • Difficulty thinking, concentrating, or deciding
  • Having frequent thoughts of death or suicide

For winter-pattern SAD, additional specific symptoms may include:

  • Oversleeping
  • Over eating, particularly a craving for carbohydrates
  • Weight gain
  • Social withdrawal

Specific symptoms for summer-pattern SAD may include:

  • Trouble sleeping
  • Poor appetite
  • Restlessness and agitation
  • Anxiety

Types of seasonal affective disorder

There are two types of SAD, winter SAD and Summer SAD. Find the symptoms of each seasonal affective disorder.

Fall and winter SAD

Symptoms specific to winter-onset SAD, sometimes called winter depression, may include:

  • Oversleeping
  • Appetite changes, especially a craving for foods high in carbohydrates
  • Weight gain
  • Tiredness or low energy
Spring and summer SAD

Symptoms specific to summer-onset seasonal affective disorder, sometimes called summer depression, may include:

  • Trouble sleeping (insomnia)
  • Poor appetite
  • Weight loss
  • Agitation or anxiety
  • Increased irritability

How to deal with SAD?

There are treatment options available to treat symptoms of SAD. Some symptoms will improve on their own when the seasons change, but with treatments such as light therapy, antidepressant medications, talk therapy, vitamin D, or some combination of these can help SAD symptoms improve more quickly.

  1. Light Therapy: involves exposing people to a dazzling light (10,000 lux) for 30-45 minutes or more per day, typically first thing in the morning during the winter months. The light boxes are about 20 times brighter than ordinary and door light and filter out, potentially damaging UV light making it a safe treatment for most. Some see improvements from light therapy within a couple of weeks of beginning treatment. To maintain the benefits, it is important to continue to use through the winter.
  2. Psychotherapy or Talk Therapy: Can effectively treat SAD symptoms, particularly by using cognitive-behavioral therapy (CBT) to help cope with difficult situations and replace negative thoughts with more positive and rational thoughts.
  3. Medications: Because SAD, like other types of depression, is associated with disturbances in serotonin activity, antidepressant medications can also treat SAD symptoms. Vitamin D deficiency is also common in people with SAD. Vitamin D supplements may help improve symptoms, but all medications and supplements need to be discussed with a doctor or a medical professional first.
Conclusion

If you feel you have symptoms of SAD, seek the help of a trained medical or mental health professional. It is important to make sure there is no other medical condition causing the symptoms, and be sure to consult with your doctor about which treatment option, or combination of treatments, would be best for you.

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