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True leukonychia: These white spots originate from the nail matrix (where your nail grows) and appear on the nail plate, says Dr. Lal. These spots do not disappear with pressure.
Also known as "true" leukonychia, this is the most common form of leukonychia, in which small white spots appear on the nails. Picking and biting of the nails are a prominent cause in young children and nail biters. Besides parakeratosis, air that is trapped between the cells may also cause this appearance. [5] It is also caused by trauma.
Anatomy of the basic parts of a human nail.A. Nail plate; B. lunula; C. root; D. sinus; E. matrix; F. nail bed; G. eponychium; H. free margin. Onychia is an inflammation of the nail folds (surrounding tissue of the nail plate) of the nail with formation of pus and shedding of the nail.
Risk factors [ edit ] Advancing age (usually over the age of 60) is the most common risk factor for onychomycosis due to diminished blood circulation , longer exposure to fungi, nails which grow more slowly and thicken, and reduced immune function increasing susceptibility to infection. [ 13 ]
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]
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 ...
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.
Bart–Pumphrey syndrome, also known as palmoplantar keratoderma with knuckle pads and leukonychia and deafness [1]) is a cutaneous condition characterized by hyperkeratoses (knuckle pads) over the metacarpophalangeal, proximal and distal interphalangeal joints. [1] It was characterized in 1967. [2] It can be associated with GJB2. [3]