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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 ]
One reason depression is thought to be a pathology is that it causes so much psychic pain and distress. However, physical pain is also very distressful, yet it has an evolved function: to inform the organism that it is being damaged, to motivate it to withdraw from the source of damage, and to learn to avoid such damage-causing circumstances in the future.
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 The reason given is: Many outdated sources and information (older than five years).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 Sorrowing Old Man (At ...
Other disorders need to be ruled out before diagnosing major depressive episodes. Differential diagnoses include, but are not limited to: [24] [7] Adjustment disorder; Anxiety disorder (Generalized anxiety, PTSD, obsessive-compulsive disorder) Bipolar disorder; Bipolar II disorder; Cyclothymic disorder; Depression due to a general medical condition
The negative effects of comorbidity include: chronicity, recovery and relapse rates, and higher suicide risk. [6] Among youth samples, negative effects of anxiety-depression comorbidity include: increased substance abuse, more likely to attempt suicide, receive a diagnosis of conduct disorder, and are less likely to show favorable gains from ...
Major depression is another common mental health problem that can develop after trauma. A review of multiple studies found that major depressive disorder and PTSD are very likely to occur at the ...
The term "psychogenic pain" has begun to fall out of relevance in the scientific community, due to its implication that the pain is entirely psychological in origin and thus not "real". [11] The change in preferred nomenclature can be traced to 1994 when the DSM-IV removed the term in favor of the more holistic "Pain Disorder" section. [4]
Myasthenia gravis, or MG, is a chronic autoimmune neuromuscular disorder that causes muscle weakness and fatigue. Myasthenia gravis is one of the rarest and most concerning muscular disorders ...