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Skin color and other factors may make the lunulae more or less visible. Because the lunula comprises the newest portion of the nail, it can provide clues about a person's health. The absence of lunulae does not always indicate a serious health problem, but it is a good idea to discuss the issue with a doctor.
Lunula anomalies include changes in form and structure and in color. Lunula dysmorphologic features can be characterized by macrolunula, microlunula or anolunula, and nonconvex lunula.
