Pathophysiology is the study of the disturbance of normal mechanical, physical, and biochemical functions, either caused by a disease, or resulting from a disease or abnormal syndrome, or condition that may not qualify to be called a disease.
An alternate definition is "the study of the biological and physical manifestations of disease as they correlate with the underlying abnormalities and physiological disturbances."[1]
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Pathophysiology can be looked at as the intersection of two older, related disciplines: (normal) physiology and pathology.
Pathophysiology looks at the detailed malfunctioning that comes from or - alternately - causes disease.
One caution in this approach is that "healthy" structure and function is not precisely the same in any two individuals.
An example from the field of infectious disease would be the study of a toxin released by a bacterium, and what that toxin does to the body to cause harm, one possible result being sepsis.
Another example is the study of the chemical changes that take place in body tissue due to inflammation.
Pathophysiology is a required area of study for nearly all healthcare professional school programs (medical, physician's assistant, pharmacy, and most nursing programs) in the United States as well as other countries.
and Paramedic Programs
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