How come when nail grow, the flesh under them doesn’t come forward along with the nail as it grows?

Question

Nails have a fleshy bottom layer attached to them that somehow doesn’t come forward with the nail as it grows, why is that?

In: Biology

Answer 1

The nail starts stacking up from the beginning, but the hyponychium (the skin just below the nail that completes the seal) stays mostly at the same place. However, I have a condition in which the skin does grow and the hyponychium may go past the nail. I may occasionally tear that skin when doing something with my hands.