Right now, the United States is facing a brutal cold spell that even has the Postal Service suspending deliveries in some areas. It is time for some with Seasonal Affective Disorder to experience what is called the Winter Blues. What is Seasonal Affective Disorder? According the Mayo.com, “Seasonal affective disorder (SAD) is a type of depression that’s related to changes in seasons.” The depression will begin and end at the same time each year. Seasonal Affective Disorder typically occurs during the fall and winter when the daylight hours are shorter. But it can also reveal itself occur the spring and summer months in rare cases.