FOCAL REACTION Meaning and
Definition
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Focal reaction is a term used in medicine and biology to describe a localized or specific response occurring in a particular area of the body, often as a result of an injury or infection. It refers to the changes that occur in tissues or organs surrounding the site of an initial pathological process, such as inflammation, injury, or irritation.
In response to a stimulus, the body initiates an immune response to protect and repair the affected area. This involves the recruitment of immune cells, release of chemical mediators, and activation of various signaling pathways. Focal reaction refers to the collective cellular and molecular changes that occur in the tissues adjacent to the primary site of inflammation or injury.
The purpose of focal reaction is to contain the initial insult and prevent its spread to other tissues or organs. It involves the formation of a localized inflammatory response characterized by redness, heat, swelling, and pain. This reaction enables the immune system to isolate and neutralize pathogens, remove damaged cells, and initiate the process of tissue repair.
Focal reaction is often observed in various medical conditions and diseases, such as localized infections, abscesses, tissue trauma, and autoimmune disorders. Understanding the mechanisms and characteristics of focal reaction is crucial for clinicians and researchers in diagnosing and treating these conditions effectively.
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The reaction at the local seat or focus of a disease to an inoculated vaccine or toxin carried there by the blood stream.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for FOCAL REACTION
- docal reaction
- cocal reaction
- vocal reaction
- gocal reaction
- tocal reaction
- rocal reaction
- fical reaction
- fkcal reaction
- flcal reaction
- fpcal reaction
- f0cal reaction
- f9cal reaction
- foxal reaction
- foval reaction
- fofal reaction
- fodal reaction
- foczl reaction
- focsl reaction
- focwl reaction
- focql reaction
Etymology of FOCAL REACTION
The term "focal reaction" does not have a specific etymology on its own. However, the two constituent words, "focal" and "reaction", each have their own etymology:
1. Focal: The word "focal" comes from the Latin word "focus", meaning "hearth" or "fireplace". It was later used metaphorically to refer to a central point or focus of something. In medical terminology, "focal" is used to describe a specific localized area or a particular point of concentration within the body, often referring to a specific type of reaction or change.
2. Reaction: The word "reaction" has its origins in the Latin word "re-", meaning "back" or "again", and "agere", meaning "to act". It refers to the response or change that occurs due to a stimulus or action.
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