What are subungual hematomas?

Updated: Aug 25, 2020
  • Author: Oliver Mayorga, MD, MS, FACEP; Chief Editor: Erik D Schraga, MD  more...
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Subungual hematomas are common nail bed injuries caused by blunt or sharp trauma to the fingers or toes. [1, 2] Bleeding from the rich vascular nail bed results in increased pressure under the nail and can cause significant discomfort. [3] Subungual hematoma drainage, also known as nail bed trephination, can be performed to relieve this discomfort. [4]

For information on various nail pathologies, see Medscape article Nail Pathology.

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