… (SAD). Categorized as Major Depressive Disorder with a seasonal onset, SAD is a term some are familiar with, but don’t truly understand. It affects about 5% of … overview of seasonal affective disorder for us? JS: Seasonal affective disorder is kind of a term that people are familiar with, and we use it colloquially. However, … improving their knowledge base in mental health while practicing in a generalized setting, such as family medicine. Some PAs may choose to pursue a post-graduate …