Which of the following signs and symptoms supports a diagnosis of depression in an adolescent? Select all that apply.

A. New onset inappropriate anger: Adolescents with depression often exhibit irritability or angry outbursts instead of classic sadness. This emotional dysregulation can be a prominent presenting feature and may disrupt relationships and daily functioning. B. Exaggerated somatic complaints: Physical complaints such as headaches, stomachaches, or generalized aches without a clear medical cause are common in depressed adolescents. These somatic symptoms often reflect emotional distress and can precede overt mood changes. C. Insomnia onset: Changes in sleep patterns, including difficulty falling asleep or staying asleep, are frequent in adolescent depression. Sleep disruption contributes to fatigue, irritability, and impaired concentration. D. Inflated self-esteem: Inflated self-esteem is more characteristic of mania or hypomania rather than depression. Depressive episodes are generally associated with low self-worth, guilt, or feelings of hopelessness rather than elevated self-perception.