許多人都有指甲周圍長倒刺的經(jīng)歷，這些倒刺不僅影響美觀，還很容易引起疼痛。為了省事，很多人習(xí)慣順手撕掉，這種錯誤方式會讓你感覺特別痛，甚至還會出血。

當(dāng)手指出現(xiàn)倒刺時，長輩總會說是平時蔬菜吃得少，缺維生素了。事實果真如此嗎？人為什么會長倒刺呢？

為什么會長倒刺

Despite what its name suggests, a hangnail isn’t part of a ripped nail still tenuously attached to the base. It’s a sliver of skin that hangs off your finger on either side of your nail. Though it often seems like they pop up out of nowhere, they happen when the skin around your nails gets weak and brittle to the point of cracking.
“倒刺”并不像它字面所指是一根倒長的刺，而是指掛在指甲兩側(cè)的一小塊手指皮膚。倒刺看似是無緣無故冒出來的，但其實當(dāng)指甲周圍的皮膚變得脆弱、易破裂時，才會長倒刺。

“They can result from a variety of things, like biting your nails, a bad manicure, dry skin, using harsh soap and detergents, cold temperatures, and ‘waterlogged’ hands,’” dermatologist Dr. James Collyer told GQ.
皮膚科醫(yī)生詹姆斯·科勒博士告訴《GQ》雜志：“倒刺可能是多種原因造成的，比如咬指甲、修甲不當(dāng)、皮膚干燥、使用粗糙的肥皂和洗滌劑、低溫和手部長期浸水?！?/p>

Note:
Detergent 洗滌劑;去垢劑;洗衣粉

Spending a day in the pool or scrubbing your bathroom with a chemical solution can definitely make you more susceptible. And unless you live in a place that stays balmy year-round, you probably have more trouble with hangnails during the winter.
在泳池里呆一天或用化學(xué)溶液擦洗浴室肯定會讓你更容易長倒刺。除非你住在一個四季如春的地方，否則到了冬天，倒刺問題可能會更嚴(yán)重。

為什么長倒刺這么痛？

The reason hangnails cause a surprising amount of pain for such a small wound is because of all the nerve endings and blood vessels in your fingertips. The more inflamed your hangnail gets, the more it pushes on those nerves.
倒刺是很小的傷口，但是造成的疼痛感卻是驚人的。這是因為指尖上有所有的神經(jīng)末梢和血管。倒刺發(fā)炎越嚴(yán)重，對神經(jīng)的刺激就越大。

如何預(yù)防倒刺

You can’t exactly avoid winter or washing your hands—but you can routinely use lotion to keep them moisturized. If you’re cleaning with chemicals or doing lots of dishes, don a pair of rubber gloves first. And when you’re clipping your nails, try not to cut the cuticles. Some people trim cuticles intentionally because it makes nails look especially neat and well-manicured, but it can also weaken your nail beds against bacteria.
你不可能不過冬天、不洗手，但你可以經(jīng)常使用乳液保持手部滋潤。如果你會用化學(xué)品做清潔或經(jīng)常洗盤子，要戴一副橡膠手套。剪指甲的時候，盡量不要剪到角質(zhì)層。有些人故意修剪指甲周圍的表皮，這樣會使指甲看起來特別整潔，修剪整齊，但這也會削弱甲床抵抗細(xì)菌的能力。

Note:
Cuticle (手指甲根部的)表皮

來源：Mental Floss
編輯：董靜