Analysis for 15 Cases with Positive Patch Test to Kathon CG

SUZUKI Mao, MATSUKURA Setsuko, SATOH Maki, NAKAMURA Kazuko, AIHARA Michiko, KAMBARA Takeshi

doi:10.18934/jedca.11.3_227

Bibliographic Information

Other Title

Kathon CGによるパッチテスト陽性例の検討
Kathon CGによるパッチテスト陽性例の検討 : 接触皮膚炎難治例と過去15症例について
Kathon CG ニヨルパッチテストヨウセイレイノケントウ : セッショクヒフエンナンチレイトカコ 15 ショウレイニツイテ
‐ 接触皮膚炎難治例と過去15症例について ‐
- A Case of Intractable Contact Dermatitis and Summary of 15 Cases

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Description

<p>　Kathon CG is an isothiazolinone preservative that is widely used in hair care products, cosmetics and wet wipes. A concern recently reported is that the frequency of positive Kathon CG patch test results has been increasing. We present the case of a woman who experienced recalcitrant dermatitis on her scalp, face, upper arms and back for 5 years. In the Japanese standard allergen 2008 series, the patch test was positive for Kathon CG. Contact dermatitis caused by haircare products containing Kathon CG was suspected. The haircare products and facial cleanser that she routinely used did not cause a reaction, although they all contained Kathon CG. The skin rash was recalcitrant, with occasional flare-ups on her scalp, face and back even after discontinuing the products. We believe that the flare-ups may have been caused by the presence of Kathon CG in some other products that she routinely used.</p><p>　We have investigated 15 cases with positive Kathon CG patch tests. Fourteen were in women, who had frequent cutaneous lesions on the face and hands. Atopic dermatitis detected in six of the cases was considered to have resulted from relatively frequent exposure to Kathon CG.</p>

Journal

Journal of Environmental Dermatology and Cutaneous Allergology

Journal of Environmental Dermatology and Cutaneous Allergology 11 (3), 227-233, 2017

The Japanese Society for Dermatoallergology and Contact Dermatitis

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