What does etiology and pathogenesis mean?
Definition. The terms “etiology” and “pathogenesis” are closely related to the questions of why and how a certain disease or disorder develops. Models of etiology and pathogenesis therefore try to account for the processes that initiate (etiology) and maintain (pathogenesis) a certain disorder or disease.
What is an etiological agent of a disease?
Etiologic agents (infectious substances), materials known or reasonably expected to contain a pathogen, require different types of special handling.
What are the three elements of etiology?
Generally, the etiology of illness falls into one of three main categories, namely:
- Intrinsic — coming from within.
- Extrinsic — originating from external factors.
- Idiopathic — cause unknown.
Why it is important to know the etiology of a disease?
Etiology is not only disease specific but also person specific. While a particular cause may lead to a disease manifesting in an individual, a similar set of factors could lead to a different illness being manifested in another individual.
What are stages of disease?
The five periods of disease (sometimes referred to as stages or phases) include the incubation, prodromal, illness, decline, and convalescence periods (Figure 2). The incubation period occurs in an acute disease after the initial entry of the pathogen into the host (patient).
What is the study of the etiology of a disease?
What is Etiology. Etiology refers to the cause, set of causes, or manner of causation of a disease or condition. Therefore, it involves the study of the initial stage of a disease and its origin. Generally, more than one factor is responsible for the occurrence of a disease in an organism.
What is the meaning of the word etiology?
The etiology of a disease is its cause or origin. Etiology is also the name for the study of the causes of diseases. It can also refer to the study of the cause of things in other fields, such as philosophy and physics. But it is most commonly used in the context of medicine.
What is the difference between etiology and causation?
Etiology refers to the cause, set of causes, or manner of causation of a disease or condition. Therefore, it involves the study of the initial stage of a disease and its origin. Generally, more than one factor is responsible for the occurrence of a disease in an organism.
What is the difference between etiology and pathophysiology?
Etiology is the study of causes and the origin of a particular disease. Therefore, it describes the initial stage of the disease process. On the other hand, the pathophysiology is the study of physiological changes that occur in an organism with a particular disease. Therefore, it describes the later stages of the disease process.