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, keep a person from leading a normal life, and can interfere with sleep, appetite, and energy.
Headaches, neck aches, dizziness. These problems have many causes, including stress, tension, and medical conditions. They also can be physical symptoms of depression. If you are prone to headaches, they may get worse when you're depressed. Depression has a way of magnifying pain, because you're more focused on negative things — a hallmark of depression.
NOTE: If your headache is the worst one you've ever experienced or it is associated with vomiting, fever, stiff neck, visual changes...
Thoughts of death or suicide, or attempting suicide (if you are thinking of acting on ideas about suicide, it is important to get help or call your local 24-hour suicide hotline right away).
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 still 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.
How Are Sleep and Depression Linked?
An inability to sleep, or insomnia, can be one of the signs of depression (a small percentage of depressed people, approximately 15%, oversleep or sleep too much). Lack of sleep alone cannot cause depression, but it does play a role. Lack of sleep caused by another medical illness or by personal problems can make depression worse. An inability to sleep that lasts over a long period of time is also an important clue that someone may be depressed.
What Causes Depression?
No one knows for sure what causes depression, but several factors have been linked to it, including:
Family history of mental disorders
Abnormalities in brain circuits that regulate mood
Physical and mental health disorders
Environment, such as living in a place that is often cloudy and gray