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What is the Quick of a Nail (Human)?

Published in Nail Anatomy 1 min read

The "quick" of a human nail, more formally known as the hyponychium, is the skin located underneath the free edge of the nail, where the nail separates from the fingertip.

Detailed Explanation of the Hyponychium

  • Location: The hyponychium resides beneath the free edge of the nail plate, forming a seal between the nail and the fingertip skin.
  • Function: It acts as a protective barrier, preventing bacteria and debris from entering under the nail and infecting the nail bed.
  • Description: It's an epithelial layer that connects the nail bed to the nail plate.

The Onychodermal Band

The onychodermal band represents the visible seal between the hyponychium and the nail plate. This area is often a slightly different color or texture compared to the rest of the nail bed.

Importance of the Hyponychium

  • Protection: The hyponychium is vital for maintaining nail health by preventing infections.
  • Indicator of Health: Changes in the appearance of the hyponychium can sometimes indicate underlying health issues.

Avoiding Damage to the Hyponychium

It is important to avoid overly aggressive cleaning under the nails as this can damage the hyponychium, increasing the risk of infection and nail problems. Gentle cleaning is recommended.