Sleep Disorders: Sleep and Depression
Depression is a mood disorder that is characterized by sadness, or having the blues. Nearly everyone feels sad or down from time to time. Sometimes, however, the sad feelings become intense, last for long periods, and keep a person from leading a normal life.
The symptoms of depression include:
Depression is classified as major if the person has at least five of these symptoms for two weeks or more. However, there are several types of depressive disorders. Someone with fewer than five of these symptoms who is having difficulty functioning should seek treatment for his or her symptoms. Tell your doctor how you are feeling. He or she may refer you to a mental health care specialist.