PATCH TEST Meaning and
Definition
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A patch test is a procedure commonly used in the field of dermatology and allergology to determine a person's sensitivity or allergic reaction to various substances. It involves applying small amounts of different allergens or irritants onto the patient's skin, usually on the back or forearm, and leaving them in contact for a specific period, typically around 48 hours.
The purpose of a patch test is to identify any adverse reactions caused by contact with certain substances, such as cosmetics, fragrances, metals, or other chemicals. It is particularly useful for diagnosing contact dermatitis, a form of allergic skin reaction resulting from direct contact with an allergen or irritating substances.
During a patch test, several patches are affixed to the skin with adhesive material. Each patch contains a different allergen or irritant that needs to be evaluated. The specific allergens are chosen based on the patient's medical history, occupation, and suspected allergens. After the designated incubation period, the patches are removed, and the dermatologist examines the skin for signs of a reaction, such as redness, itching, swelling, or blisters.
Patch tests are considered a reliable method for diagnosing allergies or sensitivities, as they provide a controlled environment in which allergens can be introduced to the skin. By identifying the substances causing adverse reactions, healthcare professionals can then recommend avoidance or prescribe appropriate treatments to manage the symptoms effectively.
Common Misspellings for PATCH TEST
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Etymology of PATCH TEST
The word "patch test" is composed of two main components: "patch" and "test".
1. Patch: The term "patch" originated from the Old English word "pæc(e)" which meant "piece of cloth, part of a garment". It later developed in Middle English to refer to a small piece of anything, such as land, cloth, or plaster. It also came to be associated with repairs or mending.
2. Test: The word "test" has Latin origins, derived from "testum" meaning "earthen pot or vessel". In the English language, it initially referred to a vessel used for trying out or proving something. Over time, "test" has come to indicate a procedure or examination performed to determine the quality, abilities, or characteristics of something.
Similar spelling words for PATCH TEST
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