Allergic contact dermatitis due to Kathon CG

Abstract

Background: Presenting the case of a woman with eczema in the anogenital area, with one year progression, caused by type IV hypersensitivity to Kathon CG. Method: Fourth-two years old woman who has had hemorrhoids for a year, since her latest pregnancy. The surgeon prescribed perianal hygiene using moist wipes and different topic treatments, which she has been using since then: hidrocortisone acetate, methylprednisolone aceponate, triamcinolone acetonide, benzocaine, glyceril trinitrate, fenticonazol, not showing improvement. After the begin of the prescribed treatment, the patient's eczema in the anoperineal area became more severe and extensive, as far as affecting the vulva. It also became chronical, severely affecting the patient's quality of life. The patient had also shown mild eczema in her extremities and scalp, for a period of two years. She does not show other antecedents of allergic pathology. Results: Prick Test to aeroallergens, Anisakis simplex and latex: positive for Salsola kali, Chenopodium album and Plantago lanceolata, negative for the rest. Standart patch test: Positive at 48 h for caines mix + + + +, kathon cg + + + +, p-phenylenediamine + +. Positive at 96 h for caines mix + + +, kathon cg + + +, p-phenylenediamine +. Cosmetics patch test: Negative. Topics drugs (methylprednisolone aceponate, triamcinolone acetonide, glyceryl trinitrate, fenticonazole nitrate) patch test: negative. Given these results, we suggested the patient measures for the avoidance of Caines, Kathon CG and P-phenylenediamine. It was confirmed that intimate hygiene moist wipes contained Kathon CG, so their use was forbidden. One month after this measure was implemented, the perineal eczema had fully disappeared, to the great improvement of the patient's quality of life. The mild eczema in her extremities and scalp also improved, almost to its total disappearance. Conclusion: We presented the case of a woman with eczema in the anogenital area, caused by type IV hypersensitivity to Kathon CG, found in the moist wipes she used for her intimate hygiene.