Small or missing lunulae usually aren't a cause for concern. They're usually just hidden underneath the cuticle or skin at the base of your finger. In some cases, missing lunulae may be a result of trauma or a sign of: anemia.
Lunula dyschromias can be confluent or spotted or can be characterized by longitudinal colored bands that traverse the lunula. Alterations in the morphologic features or color (or both) of the lunula can be an indication of either a cutaneous or a systemic disorder.
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