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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.
Psychiatric genetics. Psychiatric genetics is a subfield of behavioral neurogenetics and behavioral genetics which studies the role of genetics in the development of mental disorders (such as alcoholism, schizophrenia, bipolar disorder, and autism ). The basic principle behind psychiatric genetics is that genetic polymorphisms (as indicated by ...
Biological psychiatry. Biological psychiatry or biopsychiatry is an approach to psychiatry that aims to understand mental disorder in terms of the biological function of the nervous system. It is interdisciplinary in its approach and draws on sciences such as neuroscience, psychopharmacology, biochemistry, genetics, epigenetics and physiology ...
A mental disorder, also referred to as a mental illness, [6] a mental health condition, [7] or a psychiatric disability, [2] is a behavioral or mental pattern that causes significant distress or impairment of personal functioning. [8] A mental disorder is also characterized by a clinically significant disturbance in an individual's cognition ...
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.
Biological psychopathology is a field that focuses mostly on the research and understanding the biological basis of major mental disorders such as bipolar and unipolar affective disorder, schizophrenia and Alzheimer's disease. Much of the understanding thus far has come from neuroimaging techniques such as radiotracer positron emission ...
163 million (2017) [8] 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 ...
Mental health. Historically, mental disorders have had three major explanations, namely, the supernatural, biological and psychological models. [ 1] For much of recorded history, deviant behavior has been considered supernatural and a reflection of the battle between good and evil. When confronted with unexplainable, irrational behavior and by ...