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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.
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.
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.
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 .
"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]
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.
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 ...