A mild form of depression that is listed as a disorder in the DSM-IV-TR is?

Dysthymia, now referred to as Persistent Depressive Disorder in the DSM-5, is indeed recognized as a chronic but mild form of depression. It is characterized by a depressed mood lasting for at least two years in adults (one year in children and adolescents), often accompanied by symptoms such as low energy, low self-esteem, and difficulty concentrating. This disorder does not meet the full criteria for a major depressive episode, which entails more severe symptoms, making dysthymia a distinct and less intense form of depression.

In contrast, major depression involves more severe and debilitating symptoms that hinder daily functioning and may include suicidal thoughts. Adjustment disorder refers to a short-term, stress-related condition that leads to emotional or behavioral symptoms in response to a significant life event. Seasonal affective disorder is a type of depression that occurs at a specific time of year, usually in the winter months, caused by environmental factors like reduced sunlight. Thus, the classification of dysthymia highlights its unique position as a chronic but generally milder form of depression within the diagnostic framework.