What is a primary feature of Major Depressive Disorder?

Persistent feelings of sadness are a primary feature of Major Depressive Disorder (MDD). This condition is characterized by a consistent low mood and a lack of interest or pleasure in daily activities, which often leads to significant impairments in social, occupational, or other important areas of functioning. Individuals with MDD may also experience accompanying symptoms such as changes in appetite, sleep disturbances, fatigue, and difficulty concentrating.

While some mental health disorders might include features like manic episodes or increased energy, these are not characteristics of MDD. Manic episodes are associated with bipolar disorder, not unipolar depression. High self-esteem is typically not aligned with the experience of someone suffering from MDD, as depressive disorders often involve feelings of worthlessness or excessive guilt, further emphasizing the significance of persistent sadness in diagnosing and understanding this disorder.