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  2. Major depressive episode - Wikipedia

    en.wikipedia.org/wiki/Major_depressive_episode

    If left untreated, a typical major depressive episode may last for several months. [32] About 20% of these episodes can last two years or more, while about half end spontaneously. However, even after the major depressive episode is over 20% to 30% of patients have residual symptoms, which can be distressing and associated with disability. [5]

  3. Perfect competition - Wikipedia

    en.wikipedia.org/wiki/Perfect_competition

    In a perfectly competitive market, the demand curve facing a firm is perfectly elastic. As mentioned above, the perfect competition model, if interpreted as applying also to short-period or very-short-period behaviour, is approximated only by markets of homogeneous products produced and purchased by very many sellers and buyers, usually ...

  4. Major depressive disorder - Wikipedia

    en.wikipedia.org/wiki/Major_depressive_disorder

    This article needs to be updated. The reason given is: Many outdated sources and information (older than five years). Please help update this article to reflect recent events or newly available information. (July 2024) Medical condition Major depressive disorder Other names Clinical depression, major depression, unipolar depression, unipolar disorder, recurrent depression Specialty Psychiatry ...

  5. Health issues in athletics - Wikipedia

    en.wikipedia.org/wiki/Health_issues_in_athletics

    Along with physical injury, mental health can be affected by an array of various other factors such as serious concussions, body standards, pressure from a highly competitive atmosphere, etc. [15] Studies have shown that collegiate athletes are at a higher risk for problems such as depression, suicidal ideation, alcohol and substance use, and ...

  6. Endogenous depression - Wikipedia

    en.wikipedia.org/wiki/Endogenous_depression

    Endogenous depression is an atypical subclass of major depressive disorder (clinical depression). It could be caused by genetic and biological factors. [ 1 ] Endogenous depression occurs due to the presence of an internal (cognitive, biological) stressor instead of an external (social, environmental) stressor. [ 2 ]

  7. Dysthymia - Wikipedia

    en.wikipedia.org/wiki/Dysthymia

    Dysthymia characteristics include an extended period of depressed mood combined with at least two other symptoms which may include insomnia or hypersomnia, fatigue or low energy, eating changes (more or less), low self-esteem, or feelings of hopelessness. Poor concentration or difficulty making decisions are treated as another possible symptom.

  8. Mental disorder - Wikipedia

    en.wikipedia.org/wiki/Mental_disorder

    In the eastern Mediterranean region, it was unipolar major depression (12%) and schizophrenia (7%), and in Africa it was unipolar major depression (7%) and bipolar disorder (5%). [ 79 ] Suicide, which is often attributed to some underlying mental disorder, is a leading cause of death among teenagers and adults under 35.

  9. Psychotic depression - Wikipedia

    en.wikipedia.org/wiki/Psychotic_depression

    Psychotic depression, also known as depressive psychosis, is a major depressive episode that is accompanied by psychotic symptoms. [2] It can occur in the context of bipolar disorder or major depressive disorder. [2]