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  2. Major depressive disorder - Wikipedia

    en.wikipedia.org/wiki/Major_depressive_disorder

    163 million (2017) [ 8 ] Major depressive disorder (MDD), also known as clinical depression, is a mental disorder [ 9 ] characterized by at least two weeks of pervasive low mood, low self-esteem, and loss of interest or pleasure in normally enjoyable activities. Introduced by a group of US clinicians in the mid-1970s, [ 10 ] the term was ...

  3. Major depressive episode - Wikipedia

    en.wikipedia.org/wiki/Major_depressive_episode

    A major depressive episode (MDE) is a period characterized by symptoms of major depressive disorder. Those affected primarily exhibit a depressive mood for at least two weeks or more, and a loss of interest or pleasure in everyday activities. Other symptoms can include feelings of emptiness, hopelessness, anxiety, worthlessness, guilt ...

  4. Depression (mood) - Wikipedia

    en.wikipedia.org/wiki/Depression_(mood)

    These include major depressive disorder (commonly called major depression or clinical depression) where a person has at least two weeks of depressed mood or a loss of interest or pleasure in nearly all activities; and dysthymia, a state of chronic depressed mood, the symptoms of which do not meet the severity of a major depressive episode.

  5. Biology of depression - Wikipedia

    en.wikipedia.org/wiki/Biology_of_depression

    Biology of depression. Scientific studies have found that different brain areas show altered activity in humans with major depressive disorder (MDD), [ 1 ] and this has encouraged advocates of various theories that seek to identify a biochemical origin of the disease, as opposed to theories that emphasize psychological or situational causes.

  6. Mood disorder - Wikipedia

    en.wikipedia.org/wiki/Mood_disorder

    Bipolar disorder, cyclothymia, disruptive mood dysregulation disorder, dysthymia, major depressive disorder, premenstrual dysphoric disorder, seasonal affective disorder: Causes: Family history, previous diagnosis of a mood disorder, trauma, stress or major life changes in the case of depression, physical illness or use of certain medications.

  7. Diagnostic and Statistical Manual of Mental Disorders

    en.wikipedia.org/wiki/Diagnostic_and_Statistical...

    The Diagnostic and Statistical Manual of Mental Disorders (DSM; latest edition: DSM-5-TR, published in March 2022 [1]) is a publication by the American Psychiatric Association (APA) for the classification of mental disorders using a common language and standard criteria. It is an internationally accepted manual on the diagnosis and treatment of ...

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