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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 plate (the part of the nail that grows outward).
Increased arteriolar blood flow, the vasodilatory capacitance phenomenon, and modifications to the optical characteristics of the nail plate overlaying the blood vessel, which accentuates the normal blood vessels, have all been proposed as possible causes of the red lunula.
The lunula can best be seen in the thumb and may not be visible in the little finger. The lunula appears white due to a reflection of light at the point where the nail matrix and nail bed meet. The nail bed is the skin beneath the nail plate. It is the area of the nail on which the nail plate rests.
12. Consider taking biotin supplements. While biotin supplements haven’t been proven to aid in hair and nail growth, there are anecdotal reports that they may help to strengthen the nail plate ...
Spotted lunulae appears as tiny, round, crimson patches that are not eliminated by vitropressure. Its boundaries are evenly spaced and clearly defined across the lunula. Spotted lunulae is a symptom of nail matrix inflammation linked to several illnesses, such as nail psoriasis and alopecia areata.
Alana Severs had ignored the line on her fingernail for years, covering it up with red nail varnish. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 ...
It takes Ayanna, a nail technician, over 20 hours to paint her nails, which requires two bottles of nail polish. With this time commitment, she only paints them once a month and uses acrylic.
Blue nails, or more formally azure lunula, are characterized by a blue discoloration of the lunulae, seen in argyria and cases of hepatolenticular degeneration (Wilson's disease), also having been reported in hemoglobin M disease and hereditary acrolabial telangiectases.