Major depression, also known as clinical depression or unipolar depression, is classified as a type of affective disorder (also called mood disorder) that goes beyond the day's ordinary ups and downs, and has become a serious medical condition and important health concern in this country.
Depression involves a child's or adolescent's body, mood and thoughts. It can affect and disrupt eating, sleeping, or thinking patterns, and is not the same as being unhappy or in a "blue" mood, nor is it a sign of personal weakness or a condition that can be willed or wished away.
Children with a depressive illness cannot merely "pull themselves together" and get better. Treatment is often necessary and many times crucial to recovery.