Depression in children, not unlike depression in adults, is defined by symptoms that include but are not limited to a marked period of sadness, loss of interest in activities, and mood changes. Typically, these symptoms are not a result of a recent experience, although depressive symptoms can mirror those associated with grief and loss. There is some debate among professionals about whether or not children should be diagnosed with depression (or any other mood disorder), because they are still in the early stages of development. Research shows, however, that children, like adults, can experience symptoms of depression that can be clinically treated. Depression is often undiagnosed in childhood and may have implications throughout the life span. This entry provides an overview of the symptoms, causes, ...