Nail Growth: How Skin Under Nails Moves

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In summary, nails grow and slide over the skin, thanks to the hyponychium, which also prevents dirt and bacteria from getting under the nail.
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DaveC426913
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What happens to the skin under your fingernails as your nails grow?
I feel 12 years old asking this.

Your nails grow. Isn't the skin attached to the underside of the nail? Why doesn't it pile up at your finger tips? It doesn't, so that must mean your nail slides over the skin like a glacier over land?
 
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Sunuvagun, the nail really does slide over the skin.
1677380090686.png


This is one of those cases where asking the question publicly manages to inspire new avenues of thought into Googling answers...
 
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DaveC426913 said:
Sunuvagun, the nail really does slide over the skin.View attachment 322871

This is one of those cases where asking the question publicly inspires new avenues of thought into Googling answers...
Still, by asking, I have now found out from your post that nails are groovy ( do sorry about the pun )
:)
 
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So, the nail is held in place by that lip of skin under the leading edge - the one that you always catch with the clippers. It's called the hyponychium. That's why the nail doesn't just lift off - although it can be.
It also keeps dirt and bacteria from getting under your nail.
 
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FAQ: Nail Growth: How Skin Under Nails Moves

How does the skin under the nails contribute to nail growth?

The skin under the nails, known as the nail bed, plays a crucial role in nail growth. It supplies nutrients and oxygen to the nail matrix, the tissue responsible for producing new nail cells. As new cells are generated, they push older cells forward, causing the nail to grow. The nail bed also provides a supportive foundation for the nail plate.

What is the role of the nail matrix in nail growth?

The nail matrix is the tissue located under the base of the nail, and it is responsible for producing new nail cells. These cells harden and form the nail plate as they move outward from the matrix. The health and function of the nail matrix are critical for normal nail growth and the overall health of the nails.

How does the movement of the skin under the nails affect nail growth?

The movement of the skin under the nails, particularly the nail bed, affects nail growth by ensuring that the nail plate is smoothly and continuously pushed forward. This movement is facilitated by the constant production of new cells in the nail matrix and the gradual shedding of older cells. Proper hydration and nutrition of the nail bed are essential for maintaining this process.

Can damage to the skin under the nails impact nail growth?

Yes, damage to the skin under the nails, such as trauma to the nail bed or nail matrix, can significantly impact nail growth. Injuries can disrupt the production of new nail cells, leading to irregular nail growth, deformities, or even temporary cessation of nail growth. Proper care and protection of the nails and surrounding skin are important to prevent such damage.

What factors influence the rate of nail growth?

The rate of nail growth is influenced by several factors, including age, genetics, overall health, and nutritional status. Younger individuals tend to have faster nail growth compared to older adults. Adequate intake of vitamins and minerals, particularly biotin, zinc, and iron, can promote healthy nail growth. Additionally, maintaining good nail and skin care practices can support optimal nail health.

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