leuconychia


Also found in: Encyclopedia.

leu·ko·nych·i·a

(lū'kō-nik'ē-ă)
The occurrence of white spots, streaks, or patches underthe nails, due to the presence of air bubbles between the nail and its bed.
Synonym(s): leuconychia.
[leuko- + G. onyx (onych-), nail]

leuconychia

White discoloration of, or white patches in, the fingernails.
Mentioned in ?
References in periodicals archive ?
Leuconychia and crumbling, as seen in this patient, is a result of direct invasion of the nail plate surface.
Previous study12 had patchy leuconychia and painless onycholysis as adverse effect, but in our study adverse effects were only minor and transient.
Patients on anticonvulsants like carbamazepin, phenytoin and barbiturates in E.Swart and J Lochner (4) study had acne, leuconychia, linear scars, papular urticaria, verruca vulgaris, tinea pedis and hirsutism.
Laidlaw J (5) states that massive activation of both sympathetic and parasympathetic systems occurs during generalized tonic seizures leading to vasoconstriction of arterioles of nailmatrix ,which leads to parakeratosis and leuconychia. Of 15 cases of Hemiplegia patients 7 had skin lesions (Table.
Dermatosis due to anticonvulsant therapy was seen in 5 cases (10.02%) in the form of a acne vulgaris, leuconychia, gum hypertrophy and linear scar, offending drug found was carbamazepine and phenytoin.
Nail changes include the presence of longitudinal leuconychia. Histopathology shows areas of intraepidermal acantholysis causing the "dilapidated brick-wall" appearance.
Fingernails showed longitudinal leuconychia (Figure 2).
Nail changes such as brittleness, subungual hyperkeratosis, onycholysis and leuconychia have been reported during pregnancy.4,8,13 In our study most common nail changes are transverse grooves and brittleness of nails which are observed in 2% of females.