Name a psychological disorder commonly associated with mood disturbances.

Major depressive disorder is indeed a psychological disorder commonly associated with mood disturbances. This condition is characterized by persistent feelings of sadness, hopelessness, and a lack of interest or pleasure in activities once enjoyed. Individuals with major depressive disorder may experience a range of emotional and physical symptoms, significantly impacting their daily functioning and quality of life.

The hallmark of this disorder is the presence of a depressed mood lasting most of the day, nearly every day, which represents a significant deviation from the individual's baseline mood. The mood disturbances can lead to a variety of emotional challenges, including irritability, anxiety, and feelings of worthlessness or guilt. In addition, physical symptoms such as changes in sleep, appetite, and energy levels often accompany the mood disturbances.

Understanding the nature of major depressive disorder allows clinicians to provide appropriate interventions and support tailored to the mood-related challenges experienced by individuals, aiding in their overall recovery and management of the condition.