The back should be checked and remarked on several occasions between the 2nd and 3rd appointments. Bring or send all chemical items for testing at least a week before the first appointment so that they can be prepared for testing if necessary. Only small quantities are required eg. Label items carefully with their common and chemical names - provide data sheets if available. Bring all prescribed and non-prescribed ointments, creams and lotions that you have used.
Some patients have photopatch tests because their dermatitis develops on skin exposed to the sun.
Two sets of perfumes, antiseptics, plant materials and sunscreens may be applied. After removal, one set is exposed to a small dose of ultraviolet radiation - not enough to cause sunburn. Further information If you have had troublesome dermatitis, particularly if it is not settling with simple measures and the advice of your family doctor, ask to be referred to a Dermatologist for an opinion, and if necessary, patch testing. This site provides a wide range of information on contact dermatitis and contact allergy testing. Net - Allergy and intolerance information resource.