ⓘ Patch test

                                     

ⓘ Patch test

A patch test is a method used to determine whether a specific substance causes allergic inflammation of a patients skin. Any individual suspected of having allergic contact dermatitis or atopic dermatitis needs patch testing.

Patch testing helps identify which substances may cause slow type allergic reactions in patients, and may identify allergens not identified a blood test or skin tests. It is designed to create a local allergic reaction on a small part patients, where the diluted chemicals were planted. Chemicals included in the patch test kit are the offenders in approximately 85-90 percent of contact allergic eczema and include chemicals present in metals, e.g., Nickel, rubber, leather, formaldehyde, lanolin, fragrance, toiletries, hair dye, medicines, pharmaceuticals, foods, beverages, preservatives and other additives.