Focus
Focus (medicine)
Focus (pronounced: /ˈfoʊkəs/), in the field of medicine, refers to the primary site or origin of a disease or medical condition. The term is derived from the Latin word 'focus', meaning 'hearth' or 'fireplace', which metaphorically represents the central point or center of an activity.
Etymology
The term 'focus' was first used in the medical context in the 19th century. It is derived from the Latin word 'focus', which originally meant 'hearth' or 'fireplace'. This was later metaphorically extended to mean 'center of activity' or 'point of concentration'. In medicine, it refers to the primary site or origin of a disease or medical condition.
Related Terms
- Lesion: An abnormal change in the structure of an organ or part due to injury or disease, which may be located at the focus.
- Infection: The invasion and multiplication of microorganisms such as bacteria, viruses, and parasites that are not normally present within the body. An infection may occur at the focus of a disease.
- Pathogen: A bacterium, virus, or other microorganism that can cause disease. Pathogens may be found at the focus of an infection.
- Etiology: The cause, set of causes, or manner of causation of a disease or condition. The etiology of a disease often involves the focus.
- Symptom: A physical or mental feature which is regarded as indicating a condition of disease, particularly such a feature that is apparent to the patient. Symptoms often originate from the focus of a disease.
External links
- Medical encyclopedia article on Focus
- Wikipedia's article - Focus
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