Depression also affects the behavior of teenagers. Sleeping more is one of the signs of depression. But individuals suffering from depression may still be tired and weak after sleeping many hours. Conversely, some depressed teens suffer from insomnia or the inability to stay asleep. Eating too much or not eating enough is both possible with depression. Some teens may overeat as a way to medicate themselves while others turn to drugs or alcohol. Teens may have little interest in school or homework and stop caring about the future. Some teens may have poor attendance records.

Major depression is also known as unipolar disorder and clinical depression. It is a commonly occurring mood disorder throughout which the sufferer may feel persistently sad, overwhelmed, or hopeless. Major depression is more than just feeling blue it can affect the way you perform at work, your relationships at home, and your daily interests.