Understanding Seasonal Affective Disorder (SAD): Causes, Symptoms & Treatment

Seasonal Affective Disorder (SAD) is a type of depression that follows a seasonal pattern — most commonly beginning in fall and worsening during winter. Reduced sunlight, colder weather, and disrupted routines all contribute to this cyclical change in mood.

If you find yourself feeling more fatigued, irritable, or low during certain seasons, you may be experiencing Seasonal Affective Disorder.