Seasonal affective disorder is a type of depression that follows the seasons. The most common type of seasonal affective disorder is called winter depression. It usually begins in late fall or early winter and goes away by summer. A less common type of seasonal affective disorder, known as summer depression, usually begins in the late spring or early summer. It goes away by winter. seasonal affective disorder may be related to changes in the amount of daylight during different times of the year.

  1. Symptoms are clues to the diagnosis, not everyone with seasonal affective disorder has the same symptoms. Common symptoms of
  2. winter depression include the following:
  3. A change in appetite, especially a craving for sweet or starchy foods
  4. Weight gain
  5. A heavy feeling in the arms or legs
  6. A drop in energy level
  7. Fatigue
  8. A tendency to oversleep
  9. Difficulty concentrating
  10. Irritability
  11. Increased sensitivity to social rejection
  12. Avoidance of social situations
  13. Less common symptoms of summer seasonal affective disorder include the following:
  14. Anxiety
  15. Insomnia
  16. Irritability
  17. Weight loss
  18. Decreased appetite
  19. Increased libido