What is Depression?

Depression is a mental health disorder that can affect the way you eat and sleep, the way you feel about yourself, and the way you think about things. A depressive disorder is more than a passing mood. It is not a sign of personal weakness, and it cannot be willed or wished away.
A depressive disorder involves the body, mood, and thoughts. People who are depressed cannot "snap out of it" and get better. Without treatment, symptoms can last for months or years. Treatments such as antidepressant medications and psychotherapy can reduce and sometimes eliminate the symptoms of depression.

Types of Depression

Depressive disorders come in different forms. Three of the most common are Major Depression, Dysthymia, and Bipolar Disorder. Even within these types of depression there are variations in the number of symptoms, their severity, and persistence.
Major depression is manifested by a combination of symptoms (see symptom list below) that interfere with the ability to work, study, sleep, eat, and enjoy once pleasurable activities. Some people have a single episode of depression, but many have episodes that recur.
Dysthymia is a less severe type of depression that lasts a long time but involves less severe symptoms. If you suffer from dysthymia you probalby lead a normal life, but you may not be functioning well or feeling good. People with dysthymia may also experience major depressive episodes at some time in their lives.

Bipolar Disorder (also called manic-depression) is another type of depressive disorder. Bipolar disorder is thought to be less common than other depressive disorders. If you have bipolar disorder you are troubled by cycling mood swings - usually severe highs (mania) and lows (depression). The mood swings are sometimes dramatic and rapid, but usually are more gradual. When in the depressed stage, a person can have any or all of the symptoms of a depressive disorder. When in the manic stage, the individual may be overactive, overtalkative, and have a great deal of energy. Mania affects thinking, judgment, and social behavior, sometimes in ways that cause serious problems and embarrassment. A person in a manic phase may feel elated, full of grand schemes that might range from unwise business decisions to romantic sprees. Mania, left untreated, may worsen to a psychotic state, where the person is out of touch with reality.

Symptoms of Depression and Mania

These lists are not complete, and not everyone who is depressed or manic experiences all of these symptoms. The severity of symptoms varies with individuals and varies over time.

Depression

Persistent sad, anxious, or "empty" mood
Feelings of hopelessness, pessimism
Feelings of guilt, worthlessness, helplessness
Loss of interest or pleasure in hobbies and activities that were once enjoyed, including sex
Decreased energy, fatigue, being "slowed down"
Difficulty concentrating, remembering, making decisions
Insomnia, early-morning awakening, or oversleeping
Appetite and/or weight loss or overeating and weight gain
Thoughts of death or suicide; suicide attempts
Restlessness, irritability
Persistent physical symptoms that do not respond to treatment, such as headaches, digestive disorders, and chronic pain

Mania

Abnormal or excessive elation
Unusual irritability
Decreased need for sleep
Grandiose notions
Increased talking
Racing thoughts
Increased sexual desire
Markedly increased energy
Poor judgment
Inappropriate social behavior