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The biology of depression is the attempt to identify a biochemical origin of depression, as opposed to theories that emphasize psychological or situational causes. Scientific studies have found that different brain areas show altered activity in humans with major depressive disorder (MDD) . [ 1 ]
Hypoventilation (also known as respiratory depression) occurs when ventilation is inadequate (hypo meaning "below") to perform needed respiratory gas exchange. [1] By definition it causes an increased concentration of carbon dioxide ( hypercapnia ) and respiratory acidosis .
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Depressive may refer to: Major depressive disorder; Dysthymia; Minor depressive disorder; Recurrent brief depression; Depressive personality disorder; Depression ...
The Anxiety and Depression Association of America (ADAA) is a U.S. nonprofit organization located in Silver Spring, Maryland [7] dedicated to increasing awareness of and improving the diagnosis, treatment, and cure of anxiety disorders in children and adults. The organization is involved in education, training, and research for anxiety and ...
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).
Dysthymia (/ d ɪ s ˈ θ aɪ m i ə / dihs-THIY-mee-uh), also known as persistent depressive disorder (PDD), [3] is a mental and behavioral disorder, [5] specifically a disorder primarily of mood, consisting of similar cognitive and physical problems as major depressive disorder, but with longer-lasting symptoms.
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.