How long must symptoms persist for a diagnosis of Persistent Depressive Disorder (Dysthymia)?

For a diagnosis of Persistent Depressive Disorder, commonly known as Dysthymia, symptoms must persist for a minimum of two years in adults. This duration is crucial as it reflects the chronic nature of the disorder. In children and adolescents, the symptom duration required is at least one year, highlighting the need for consistency over time for a proper diagnosis. This distinction underscores the long-term aspect of Persistent Depressive Disorder, which differentiates it from more episodic forms of depression. The requirement of two years emphasizes that these symptoms must be long-lasting and not just temporary or situational, which is essential in distinguishing it from other mood disorders.