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It is also caused by trauma. In most cases, when white spots appear on a single or a couple of fingernails or toenails, the most common cause is injury to the base (matrix) of the nail. When this is the case, white spots disappear after around eight months, which is the amount of time the nails take to regrow completely.
Mees' lines can look similar to injury to the nail, which should not be confused with true Mees' lines. [1] Mees' lines appear after an episode of poisoning with arsenic, [2] thallium or other heavy metals or selenium, [3] opioid MT-45, and can also appear if the subject is suffering from kidney failure. [4] They have been observed in ...
"Trauma could cause white spots on the nails or even white lines (leukonychia)," says Dr. Mendeszoon. "Bumping one’s toe or being stepped upon may cause injury to the nail plate and dermis ...
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 ...
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Koilonychia - spooning, or nails that grow upwards. Associated with iron-deficiency anaemia or vitamin B 12 deficiency. [citation needed] Pitting of the nails is associated with psoriasis. Beau's lines are horizontal ridges in the nail. Habit-tic deformity is a condition similar to Beau's Lines caused by long-term skin picking.
Onychomycosis, also known as tinea unguium, [4] is a fungal infection of the nail. [2] Symptoms may include white or yellow nail discoloration, thickening of the nail, and separation of the nail from the nail bed. [2]
Beau's lines can also be a sign of zinc deficiency. [8] A researcher found Beau's lines in the fingernails of two of six divers following a deep saturation dive to a pressure equal to 305 metres (1,001 ft) of sea water, and in six of six divers following a similar dive to 335 metres (1,099 ft). [9] They have also been seen in Ötzi the Iceman.