爪カンジダ症

CANDIDIASIS OF THE NAIL

I．はじめに

　爪カンジダ症は爪白癬に比べて頻度は低いのであるが，指爪を侵すことが多く，美容上における重要性は爪白癬にいささかも劣るものではない。しかし，カンジダによる爪変形についての記載はSamman^1）がやや詳しく記しているのみで，その他の成書^2〜5）には極めて僅かしか記されていないのが現状である。このように爪カンジダ症に対する認識はまだ充分とはいえず，本症が他種疾患と誤つて加療され，患者に対して経済的，時間的浪費を強いている例がしばしばみられるのである。それ故に，著者はこの3年間に経験した爪カンジダ症に基づいて，その臨床像，組織像ならびに治療法について報告し，併せて本症の成因について若干の考察を試みた。

Clinical and histopathological studies on 55 cases of candidiasis of the nail which were proved mycologically were performed.

It can be divided into three types clinically of posterial paronychial, lateral paronychial and onycholytic type.

Although the three types differ in clinical picture, their pathomechanism is the same. The nail separates from the epidermis and the epidermis becomes hyperkeratotic by candidial infection. The different degree of hyperkeratosis due to anatomical characteristics of the nail fold and nail bed makes the different clinical picture of the three types.

Candida can mainly be found in hyperkeratotic part, but it is also proved in the nail plate. It shows hyphae form in the nail and spore form in the part which easily contacts with air.

Except topical appliaction of anti-candidial drugs, treatment against bacterial infection acompanied with candididasis should be borne in mind. It takes usually 3 to 6 months for complete cure.