patch test is a test that the rash caused by exposure to the cause. , Common metals such as nickel, rubber gloves, hair dyes and chemicals used in dyes, perfumes or preservatives.
Patch Test is a test of rash caused by touching the substance that causes. Which are found frequently, such as rubber gloves and hair dye Nickels metal used in dyeing? Preservatives, perfume, etc.
That is the test Patch Test allergy caused by the experience of the cause, such as common rubber glove color nickel metal to dye his hair and the use of color-treated hair, preservative perfumes, etc.