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Beau's lines. Beau's lines are deep grooved lines that run from side to side on the fingernail or the toenail. [1] They may look like indentations or ridges in the nail plate. [2]: 657. This condition of the nail was named by a French physician, Joseph Honoré Simon Beau (1806–1865), who first described it in 1846.
Lichen planus. Trachyonychia is a condition characterized by rough accentuated linear ridges (longitudinal striations) on the nails of the fingers and toes. [3] When the condition occurs on all the twenty nails of the fingers and toes, it is known as twenty-nail dystrophy, most evident in childhood, [4] favoring males. [2][5] Trachyonychia ...
Another common cause of ridges is dehydration of the nail plate—say, from frequent manicures or excessive water exposure. This is also why fingernail ridges are more likely to pop up if you’ve ...
Onychomadesis is defined by the nail plate's detachment from the matrix, its continuous connection to the nail bed, and, frequently but not always, shedding. [4] Beau lines are transverse ridges on the nail plates. [5] Onychomadesis might be considered a more severe version of Beau lines. [6]
“Ridges in the fingernails are vertical or horizontal depressions on the nail plate,” says Angela Kim, D.O., a board-certified dermatologist practicing in Yuba City, California. “Ridges can ...
The nail matrix is the active tissue (or germinal matrix) that generates cells. The cells harden as they move outward from the nail root to the nail plate. [3] The nail matrix is also known as the matrix unguis, keratogenous membrane, or onychostroma. [4] It is the part of the nail bed that is beneath the nail and contains nerves, lymph and ...
Muehrcke's lines were described by American physician Robert C. Muehrcke (1921–2003) in 1956. In a study published in BMJ, he examined patients with known chronic hypoalbuminemia and healthy volunteers, finding that the appearance of multiple transverse white lines was a highly specific marker for low serum albumin (no subject with the sign had SA over 2.2 g/dL), was associated with severity ...
A nail disease or onychosis is a disease or deformity of the nail. Although the nail is a structure produced by the skin and is a skin appendage, nail diseases have a distinct classification as they have their own signs and symptoms which may relate to other medical conditions. Some nail conditions that show signs of infection or inflammation ...