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Sickness behavior is a coordinated set of adaptive behavioral changes that develop in ill individuals during the course of an infection. [1] They usually, but not always, [2] accompany fever and aid survival. Such illness responses include lethargy, depression, anxiety, malaise, loss of appetite, [3][4] sleepiness, [5] hyperalgesia, [6 ...
Biopsychosocial models are a class of trans-disciplinary models which look at the interconnection between biology, psychology, and socio - environmental factors. These models specifically examine how these aspects play a role in a range of topics but mainly psychiatry, health and human development. The term is generally used to describe a model ...
Critical period. In developmental psychology and developmental biology, a critical period is a maturational stage in the lifespan of an organism during which the nervous system is especially sensitive to certain environmental stimuli. If, for some reason, the organism does not receive the appropriate stimulus during this "critical period" to ...
Signs and symptoms are diagnostic indications of an illness, injury, or condition. Signs are objective and externally observable; symptoms are a person's reported subjective experiences. [1] A sign for example may be a higher or lower temperature than normal, raised or lowered blood pressure or an abnormality showing on a medical scan.
Diathesis–stress model. The diathesis-stress model, also known as the vulnerability–stress model, is a psychological theory that attempts to explain a disorder, or its trajectory, as the result of an interaction between a predispositional vulnerability, the diathesis, and stress caused by life experiences. The term diathesis derives from ...
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 to investigate the biological bases of behavior and psychopathology.
In psychology. In psychology, the term medical model refers to the assumption that psychopathology is the result of one's biology, that is to say, a physical/organic problem in brain structures, neurotransmitters, genetics, the endocrine system, etc., as with traumatic brain injury, Alzheimer's disease, or Down's syndrome.
Pathogenesis. In pathology, pathogenesis is the process by which a disease or disorder develops. It can include factors which contribute not only to the onset of the disease or disorder, but also to its progression and maintenance. [1] The word comes from Ancient Greek πάθος (pathos) 'suffering, disease' and γένεσις (genesis ...