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  2. Major depressive disorder - Wikipedia

    en.wikipedia.org/wiki/Major_depressive_disorder

    The diagnosis hinges on the presence of single or recurrent major depressive episodes. [115] Further qualifiers are used to classify both the episode itself and the course of the disorder. The category Unspecified Depressive Disorder is diagnosed if the depressive episode's manifestation does not meet the criteria for a major depressive episode ...

  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. Mood disorder - Wikipedia

    en.wikipedia.org/wiki/Mood_disorder

    A mood disorder, also known as an affective disorder, is any of a group of conditions of mental and behavioral disorder [2] where the main underlying characteristic is a disturbance in the person's mood. [3] The classification is in the Diagnostic and Statistical Manual of Mental Disorders (DSM) and International Classification of Diseases (ICD).

  5. Bipolar I disorder - Wikipedia

    en.wikipedia.org/wiki/Bipolar_I_disorder

    Bipolar I disorder (BD-I; pronounced "type one bipolar disorder") is a type of bipolar spectrum disorder characterized by the occurrence of at least one manic episode, with or without mixed or psychotic features. [1] Most people also, at other times, have one or more depressive episodes. [2] Typically, these manic episodes can last at least 7 ...

  6. Depression (mood) - Wikipedia

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

    e. Depression is a mental state of low mood and aversion to activity. [3] It affects about 3.5% of the global population, or about 280 million people of all ages (as of 2020). [4] Depression affects a person's thoughts, behavior, feelings, and sense of well-being. [5]

  7. List of mental disorders in the DSM-IV and DSM-IV-TR

    en.wikipedia.org/wiki/List_of_mental_disorders...

    296.xx Major depressive disorder.2x Major depressive disorder, single episode .26 In full remission.25 In partial remission.21 Mild.22 Moderate.23 Severe without psychotic features.24 Severe with psychotic features.20 Unspecified.3x Major depressive disorder, recurrent .36 In full remission.35 In partial remission.31 Mild.32 Moderate

  8. Recurrent brief depression - Wikipedia

    en.wikipedia.org/wiki/Recurrent_brief_depression

    Recurrent brief depression (RBD) defines a mental disorder characterized by intermittent depressive episodes, not related to menstrual cycles in women, occurring between approximately 6–12 times per year, over at least one year or more fulfilling the diagnostic criteria for major depressive episodes (DSM-IV and ICD-10) except for duration in which RBD is less than 14 days (typically 5–7 ...

  9. Differential diagnoses of depression - Wikipedia

    en.wikipedia.org/wiki/Differential_diagnoses_of...

    Depression, one of the most commonly diagnosed psychiatric disorders, [2] [3] is being diagnosed in increasing numbers in various segments of the population worldwide. [4] [5] Depression in the United States alone affects 17.6 million Americans each year or 1 in 6 people. Depressed patients are at increased risk of type 2 diabetes ...