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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 ...
Leukonychia striata, transverse leukonychia, or Mees' lines are a whitening or discoloration of the nail in bands or "stria" that run parallel to the lunula (nail base). This is commonly caused by physical injury or disruption of the nail matrix.
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 ...
White lines across the nail (leukonychia striata, or transverse leukonychia) may be Mees' lines or Muehrcke's lines. Small white patches are known as leukonychia punctata. Dark nails are associated with B 12 deficiency. Stains of the nail plate (not the nail bed) are associated with smoking and henna use.
Beau's lines should also be distinguished from Mees' lines of the fingernails, which are areas of discoloration in the nail plate. As the nail grows out, the ridge in the nail can be seen to move upwards until it reaches the fingertip. When it reaches this point the fingertips can become sore for a few days as the nail bed is exposed by the ...
Dermatoscopy, also known as dermoscopy [1] or epiluminescence microscopy, is the examination of skin lesions with a dermatoscope. It is a tool similar to a camera to allow for inspection of skin lesions unobstructed by skin surface reflections.
In addition to the traditional tetrad symptoms, other diagnostic techniques such dermoscopy, ultrasonography, and histological findings are also used to make the diagnosis. [2] Hemorrhagic striae, white longitudinal grooves that match the nail plate channels, and perforations in the distal region of the nail plate are all visible during dermoscopy.
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.