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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.
Many professionals believe that the cause of mental disorders is the biology of the brain and the nervous system. Mind mentions genetic factors, long-term physical health conditions, and head injuries or epilepsy (affecting behavior and mood) as factors that may trigger an episode of mental illness.
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 adopted by the American ...
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.
Depressive disorder (also known as depression) is a common mental disorder. It involves a depressed mood or loss of pleasure or interest in activities for long periods of time. Depression is different from regular mood changes and feelings about everyday life. It can affect all aspects of life.
Depression is a significant mental illness with physiological and psychological consequences, including sluggishness, diminished interest and pleasure, and disturbances in sleep and appetite. [1] It is predicted that by the year 2030, depression will be the number one cause of disability in the United States and other high-income countries.
[2] [4] As depression is also associated with pro-inflammatory responses, the suggestion is that the causes of depression are little different from the causes of the autoimmune diseases it is largely co-morbid with, with sanitary environments increasing the risk of excessive inflammation in response to psychosocial stressors just as it is ...
Base rates and prevalence. About 8% of children and adolescents suffer from depression. [7] In 2016, 51% of students (teens) who visited a counseling center reported having anxiety, followed by depression (41%), relationship concerns (34%) and suicidal ideation (20.5%). [8] Many students reported experiencing multiple conditions at once.
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