> For the complete documentation index, see [llms.txt](https://helpcenter.tpandco.jp/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://helpcenter.tpandco.jp/docs/definition-of-words/neirukeanisuruto/sasakurehandnail.md).

# ささくれ（handnail）

### **ささくれとは？** 

ささくれ（正式には「さかむけ」）は、**爪の周囲の皮膚（特にPNF周辺）の角質が乾燥してめくれ上がり、剥がれた状態**です。 見た目が気になるだけでなく、引っかかって痛くなったり、炎症を起こしたりすることもあります。

### **なぜできるの？** 

指先の皮膚は元々乾燥しやすい場所です。 乾燥すると[ケラチン](/docs/definition-of-words/nono/kerachinkeratin.md)の層（角質）が正常に剥がれなくなり、物理的な摩擦などでまだらに剥がれます。 特に、[**PNF（甘皮周辺）**](/docs/definition-of-words/nono/pnf-proximal-nail-fold.md)や[**爪の溝（側溝）**](/docs/definition-of-words/nono/nonail-grooves.md)が乾燥すると起こりやすくなります。

### **主な原因**

* 空気の乾燥（特に冬）
* 水仕事や洗剤の使用
* 保湿不足
* 無理な甘皮カット

### **予防・ケアのポイント**

* **毎日こまめな保湿**（[ネイルオイル](/docs/herome/nail-care/nourishing-nail-oil.md)や[ネイルクリーム](/docs/herome/cuticle-care/cuticle-cream.md)）
* 水仕事時はゴム手袋の使用
* 無理にささくれを引っ張らない（芋づる式に深く剥がれる原因に）
* 保湿を習慣化して皮膚のバリア機能を高める


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