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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).
Terry's nails is a physical condition in which a person's fingernails or toenails [1]: 659 appear white with a characteristic "ground glass" appearance without any lunula. [2]
Half and half nails (also known as "Lindsay's nails") show the proximal portion of the nail white and the distal half red, pink, or brown, with a sharp line of demarcation between the two halves. [ 1 ] : 785 The darker distal discoloration does not fade on pressure, [ 2 ] which differentiates Lindsay's nails from Terry's nails .
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.
According to Medical News Today, nail clubbing occurs in 5%-15% of people with lung cancer, though it can develop due to a variety of other conditions, including severe cases of chronic ...
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 ...
Terry's nails: R. Terry: internal medicine: various including hepatic failure: white 'ground glass' nails;absence of lunula Terry Thomas sign: Terry-Thomas: Orthopaedics: Scapho-lunate dissociation: Atlas of Signs in Musculoskeletal Radiology: Gap between the scaphoid and lunate bones on AP wrist radiograph Thomas test: Hugh Owen Thomas ...
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 ...