Symptoms of this recurrent form of depression become worse in the late autumn or early winter before going away as the days grow longer and brighter in the spring or summer. While most people are more likely to experience SAD in winter, some people can experience it in reverse, during the spring or summer, although this is rare.
SAD is more than a case of the “winter blues” because the symptoms can be severe and even debilitating for many people. Seasonal affective disorder differs from major depressive disorder in that MDD occurs throughout the year and does not depend on seasonal change.
