Which symptom is commonly associated with major depressive disorder?

The symptom of having little interest in activities once enjoyed, known as anhedonia, is a core characteristic of major depressive disorder. Individuals experiencing this disorder often find that they lose motivation or pleasure in hobbies, social interactions, and activities that previously brought them joy. This symptom reflects the pervasive feelings of sadness and hopelessness that can disrupt daily functioning and overall quality of life. It contrasts sharply with feelings of excessive energy and optimism, which are not typically seen in depression, as well as with symptoms that indicate heightened sensitivity or prolonged euphoria, both of which do not align with the clinical profile of major depressive disorder.