Leukonychia | Signs - MedSchool
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Leukonychia

Overview

    • Look For

    • Whiteness of the nail beds.
    • Interpretation

    • True Leukonychia

    • Total leukonychia: generalised whitening of the nails.Inherited - rare
    • Transverse leukonychia (Mee’s lines): single white bands running parallel to the nail base, that do not disappear when depressed.Intermittent insult during nail growth - arsenic, chemotherapy, trauma, infection
    • Apparent Leukonychia

    • Muehrcke’s lines: double white bands that disappear when the nail is depressed.Chronic hypoalbuminaemia
    • Half and half nails (Lindsay’s nails): proximal white nail bed and distal brown nail, separated by a transverse ridge.Uraemia
    • Terry’s nails: white proximal nail bed with loss of the lunula (proximal white crescent-shaped area).Cirrhosis, heart failure, diabetes, malnutrition, renal transplant
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