Abstract: This is a descriptive study of the characteristics of depression in a sample of 121 adolescents attending an outpatient specialist adolescent mental health service in New Zealand. The adolescents were required to complete two self-report measures to assess presence of depressive symptoms, severity of depression, and particular characteristics of the depression. The findings revealed that irritability was the most common characteristic along with other interpersonal and thought processing symptoms. It is important that mental health nurses are able to identify the specific characteristics of adolescent depression that may differ from adult depression in order to manage this patient population effectively.