what are hangnails? And how do they form?

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Also if possible to answer, why do they hurt so much?

In: Biology

Hangnails are just torn skin around your fingernails. Usually happens when your skin is dry or when biting your fingernails. To prevent hangnails, try to keep your hands hydrated in the warmer months and avoid biting your nails. Most of the pain comes from trying to rip them off. The hangnail sometimes makes your finger swell, which would hurt more when pulling them off. It’s also a bad idea to bite them off, since tearing them off exposes skin and leaves you exposed to infections. Your mouth is full of germs and could lead to infection.

TLDR: They’re thorn skin and hurt when you pull them off. Keep your hands hydrated to prevent more.