The white half-moon shape at the base of your nails, just above the cuticle, is called the lunula.
Here's a more detailed explanation:
- What is it? The lunula is the visible part of the nail matrix. The nail matrix is the area where the nail cells are created. It doesn't actually appear white; it's the fifth basal layer of the epidermis.
- Where is it usually most prominent? Typically, the lunula is largest on the thumbnail and gradually decreases in size as you move towards the pinky finger. Sometimes, the lunula might not be visible on all fingers.
- What can changes indicate? Significant changes in the size, shape, or color of the lunula can, in some cases, be associated with underlying health conditions. However, variations are often normal.
In summary, the lunula is a normal part of your nail structure. While changes can sometimes indicate health problems, variations in size and visibility are often simply a natural characteristic. If you have concerns about your nails, it is always best to consult with a healthcare professional.
