Patch testing
Patch testing
Patch testing (pronounced: /pætʃ ˈtɛstɪŋ/) is a method used in dermatology to identify substances that may cause allergic contact dermatitis in an individual.
Etymology
The term "patch testing" is derived from the method of application, where patches containing potential allergens are applied to the skin.
Procedure
In a patch test, small amounts of potential allergens are applied to the skin on adhesive patches. These patches are usually left on the skin for 48 hours and are then removed. The skin is then examined for any reactions at 72 to 96 hours after application.
Related Terms
- Allergen: A substance that can cause an allergic reaction.
- Dermatitis: Inflammation of the skin.
- Contact dermatitis: A type of dermatitis that occurs when the skin comes into contact with a certain substance.
- Allergic contact dermatitis: A type of contact dermatitis that occurs when the skin comes into contact with a substance to which the individual is allergic.
See Also
External links
- Medical encyclopedia article on Patch testing
- Wikipedia's article - Patch testing
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