PATHOLOGY |
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Pathology (from Greek pathos, feeling, pain, suffering; and logos, study of; see also -ology) is the study of the processes underlying disease and other forms of illness, harmful abnormality, or dysfunction. Within biology, it means specifically the study of the structural and functional changes in cells, tissues and organs that underlie disease. Another name for pathology is laboratory medicine.
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PREVENTATIVE MEDICINE |
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Generally speaking, preventive medicine (often mis-spelled and mis-pronounced "preventative medicine") is that part of medicine engaged with preventing disease rather than curing it. It can be contrasted not only with curative medicine, but also with public health methods (which work at the level of population health rather than individual health).
Professionals involved the public health aspect of this practice may be involved in entomology, pest control, and public health inspections. Public health inspections can include recreational waters, pools, beaches, food preparation and serving, and industrial hygiene inspections and surveys.
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PSYCHIATRY |
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Psychiatry is the branch of medicine that studies, diagnoses, and treats mental illness and behavioral disorders. While all physicians will encounter patients with mental illnesses and any of them may treat it, psychiatrists specialize in these areas. They are more extensively trained in the differential diagnosis (the distinguishing of various forms) and treatment of mental illness. Given the advantage of the preliminary medical training as well as further specialist training, psychiatry when practised properly offers a truly holistic approach to patient care. Many other professionals also provide mental health care, such as psychologists, nurse practitioners, counselors, physician assistants, and social workers. In general only doctors, nurse practitioners, or physician assistants may prescribe mental health medication in the United States[1]. In some countries, mental health medication may only be prescribed by medical doctors.
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