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Apparent leukonychia is caused by changes in the nail bed that are visible through the nail plate. A number of patterns of apparent leukoncychia, including Terry's nails , half-and-half (Lindsay's) nails , and Muehrcke's lines , have been classically characterized.
There are a few main types of leukonychia, including: Apparent leukonychia: These white spots appear on the nail bed (under the nail) and disappear when pressure is placed on the nail, Dr. Camp says.
Apparent leukonychia striata Muehrcke's nails or Muehrcke's lines ( apparent leukonychia striata ) are changes in the fingernail that may be a sign of an underlying medical condition. The term refers to a set of one or more pale transverse bands extending all the way across the nail, parallel to the lunula .
True leukonychia, where white spots develop where the nail starts to grow, ... which is the hard part of your nail. Apparent leukonychia, where white spots develop in the skin in the nail bed.
"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 ...
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]
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.
Apparent leukonychia; Beau's lines; Blue nails; Bromidrosis (apocrine bromhidrosis, fetid sweat, malodorous sweating, osmidrosis) Bubble hair deformity; Central centrifugal cicatricial alopecia (follicular degeneration syndrome, pseudopelade of the central scalp) Chevron nail (herringbone nail) Chromhidrosis (colored sweat) Chronic paronychia ...