Depression is a mood disorder characterized by persistent feelings of sadness, hopelessness, and loss of interest or pleasure in activities that were once enjoyable. It's a common mental health condition that can affect anyone, regardless of age, gender, or background. Depression can vary in severity and duration, and it can have a significant impact on various aspects of life, including work, relationships, and physical health. It's essential to seek professional help if you experience persistent or severe symptoms of depression that interfere with daily functioning quality of life.