The lunula (pl.: lunulae; from Latin 'little moon') is the crescent-shaped whitish area of the bed of a fingernail or toenail. In humans, it appears by week 14 [1] of gestation, and has a primary structural role in defining the free edge of the distal nail …

2018年8月24日 · What are Fingernail Lunulae? The lunula means “little moon” in Latin. It is the crescent-shaped whitish area of the bed of a fingernail or toenail. The matrix of the fingernail (or toenail) is where each nail starts to grow. This is where new cells are made up, which ultimately make up the new nail. The lunula is also apart of this matrix.

2022年5月26日 · The lunulae or crescents of your nails can tell you things about our general health, so any change in them might indicate a problem elsewhere.

2023年2月15日 · Lunulae cover the bottom of your nail, just above your cuticle. Lunulae are part of your nail matrix. The matrix refers to the tissue just beneath your nail. It contains nerves, lymph,...

2024年9月2日 · What does it mean to have no moons on fingernails? Not being able to see a half-moon, or lunula, on the nails may be a sign of a vitamin deficiency, vitiligo, kidney failure, or another health...

2018年2月1日 · Sometimes you may only be able to see lunula on your thumbs or not at all. It may be hidden under your skin. But an absent lunula can also occur with certain health conditions and cause other...

2019年4月26日 · Learn about the brief characteristics of healthy lunulae vs. unhealthy lunulae, what does absence of lunulae indicate, what does a large or a small lunula indicate, what does the shape and color of the lunula indicate and meaning of lunulae on different fingernails.

2022年7月8日 · If your lunulae are purple or blue, or if you have purple above half-moon on nails, that’s a sign that your body is having trouble getting blood to the extremities. This is turning your lunulae purple because they lack oxygen.

2025年1月27日 · Healthy lunulae are usually a whitish color and take up a small portion of the bottom of your nail. They’re usually most visible on your thumb. You may notice that they appear smaller on your pointer finger, gradually shrinking in size until you reach your pinkie where they may be barely visible.

The lunula is the visible portion of the distal nail matrix that extends beyond the proximal nailfold. It is white, half-moon-shaped, appears by week 14 of gestation, and has unique histologic features. The lunula has a primary structural role in defining the free edge of the distal nail plate.