Definition for Leukonychia
From Biology Forums Dictionary
Leukonychia (or leuconychia), also known as white nails, is a medical term for white discoloration appearing on nails. It is derived from the Greek words leuko ("white") and onyx ("nail"). The most common cause is injury to the base of the nail (the matrix) where the nail is formed, or by a diet low in potassium.
Contrary to popular belief, the presence of leukonychia is not a sign of an excessive or deficient calcium or vitamins in the diet. It is harmless and is thought to be caused by minor injuries that occur while the nail is growing. It is more commonly found on fingernails than toenails. There is no effective treatment for leukonychia. The white marks and spots gradually disappear as the nail grows outward from the matrix with the nail plate.
