Evaluation of contact sensitization in vulvar lichen simplex chronicus - A proposal for a battery of selected allergens

OBJECTIVE: To determine the role of contact sensitization in vulvar lichen simplex chronicus and to select appropriate batteries of allergens to test. STUDY DESIGN. Between 1993 and 2000, 61 women affected by vulvar lichen simplex chronicus were enrolled to evaluate the role of contact hypersensitivity. All the patients underwent patch tests with the Italian standard series and with a wide battery of allergens (preservatives, perfumes, emulsifiers, medicaments) and products they used routinely. RESULTS: Of the women, 47.5% had at least one positive patch test, and relevant positivities were observed in 26%. The relevant allergens were usually medicaments and preservatives. CONCLUSION: It would be acceptable to reduce the number of allergens tested, in particular omitting the perfume series. Patch tests are a helpful diagnostic tool in vulvar lichen simplex chronicus and improve prescribing practice.