Find a Therapist

Seasonal Affective Disorder

Seasonal Affective Disorder, commonly referred to as S.A.D., is a condition characterized by low mood during the winter months, when the days are shorter and less natural light is available. This form of depression usually subsides during spring, summer, and early autumn. However, Seasonal Affective Disorder may transition to a more serious form of depression if left untreated.

Symptoms of S.A.D. may include:

  • Sadness and/or depressed mood
  • Hopelessness
  • Negative and pessimistic viewpoint
  • Trouble with memory or concentration
  • Feelings of guilt, worthlessness or helplessness
  • Irritability
  • Restlessness
  • Loss of interest
  • Fatigue and low energy
  • Difficulty sleeping or oversleeping
  • Fluctuations, losses, or gains in weight
  • Thinking about death, dying, and/or suicide

S.A.D. may be treated with light therapy, which involves time spent with a bright light that imitates natural sunlight. S.A.D. symptoms may also improve simply by making changes in routine and lifestyle, such as letting more natural light into the home and office, as well as getting enough sleep, exercise, and proper nutrition.

In some cases, S.A.D. symptoms may not subside with light therapy or lifestyle changes alone. Psychotherapy can help to combat the effects of Seasonal Affective Disorder. Contact Dalton Associates at 1.888.245.5516 to connect with support for S.A.D.



1. National Institute of Health, 2013. Seasonal Affective Disorder. Retrieved from:


2. U.S. National Library of Medicine, February 11, 2012. Seasonal Affective Disorder. Retrieved from:

Share this Information Article

Find More Information & Help

Research a Condition Find a Therapist Contact Us