… Seasonal Affective Disorder (SAD). Categorized as Major Depressive Disorder with a seasonal onset, SAD is a term some are familiar with, but don’t truly understand. … more of that seasonal component, it's not just coming out of nowhere, and it will get better. Does the holiday season play into seasonal affective disorder with … very dark, and there's not a whole lot that they're excited about except trying to get to that period where we have the more daylight. For others, the holiday season …