Hematoma Topic Guide
Hematoma: A hematoma is a collection of blood outside a blood vessel usually caused by injury to the blood vessel wall. Causes of hematoma include trauma, head injury, bumps, infections, and diseases. Symptoms may be pain, redness, and swelling. Treatment of hematoma depends on the cause.
Subungual Hematoma (Bleeding Under Nail) A subungual hematoma is a collection of blood in the space between the nailbed and fingernail. Subungual hematoma results from a direct injury to the fingernail. Symptoms and signs include a dark discoloration under the nail and intense pain. Treatment involves:
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