Depression

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Depression facts

  • A depressive disorder is a syndrome (group of symptoms) that reflects a sad, blue mood exceeding normal sadness or grief.
  • Depressive disorders are characterized not only by negative thoughts, moods, and behaviors but also by specific changes in bodily functions (for example, eating, sleeping, and sexual activity).
  • One in 10 people will have a depressive disorder in their lifetime, and in one of 10 cases, the depression is a fatal disease as a result of suicide.
  • Some types of depression, especially bipolar depression, run in families.
  • While there are many social, psychological, and environmental risk factors for developing depression, some are particularly prevalent in one gender or the other, or in particular age or ethnic groups.
  • There can be some differences in symptoms of depression depending on age, gender, and ethnicity.
  • Depression is diagnosed only clinically in that there is no laboratory test or X-ray for depression. Therefore, it is crucial to see a health professional as soon as you notice symptoms of depression in yourself, your friends, or family.
  • The first step in getting appropriate treatment is a complete physical and psychological evaluation to determine whether the person, in fact, has a depressive disorder.
  • Depression is not a weakness but a serious illness with biological, psychological, and social aspects to its cause, symptoms, and treatment. A person cannot will it away. Untreated, it will worsen. Undertreated, it will return.
  • There are many safe and effective medications, particularly the SSRIs, that can be of great help in depression.
  • For full recovery from a mood disorder, regardless of whether there is a precipitating factor or it seems to come out of the blue, treatments with medications and/or electroconvulsive therapy (ECT) and psychotherapy are necessary.
  • In the future, through depression research and education, we will continue to improve our treatments, decrease society's burden, and hopefully improve prevention of this illness.
Reviewed by William C. Shiel Jr., MD, FACP, FACR on 5/15/2012


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Learn about the different types of depression.

Types of Depression

Major depression (or major depressive disorder) is manifested by a combination of symptoms (see symptoms list below) that interferes with the ability to work, study, sleep, eat, and enjoy once pleasurable activities. A major depressive episode may occur only once; but more commonly, several episodes may occur in a lifetime. Chronic major depression may require a person to continue treatment indefinitely.

A less severe type of depression, dysthymia (or dysthymic disorder), involves long lasting, chronic symptoms that do not seriously disable, but keep one from functioning well or feeling good. Many people with dysthymia also experience major depressive episodes at some time in their lives.

Another type of depressive illness is bipolar disorder (or manic depressive illness). Bipolar disorder is characterized by cycling mood changes: severe highs (mania) and lows (depression), often with periods of normal mood in between. Sometimes the mood switches are dramatic and rapid, but usually they are gradual. When in the depressed cycle, an individual can have any or all of the symptoms of depression. When in the manic cycle, the individual may be overactive, over talkative, and have a great deal of energy. Mania often affects thinking, judgment, and social behavior in ways that cause serious problems and embarrassment. For example, the individual in a manic phase may feel elated, full of grand schemes that might range from unwise business decisions to romantic sprees and unsafe sex. Mania, left untreated, may worsen to a psychotic state.

SOURCE: National Institute of Mental Health

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