Torn or Detached Nail: Unfortunately, there isn't much that can be done to repair a nail once it has detached or become torn. Damage to any surrounding tissue warrants a visit to a doctor. Any loose portions of the torn or detached nail should be removed. After cleaning the nail bed with soap and water, apply petroleum jelly or an antibiotic ointment and cover the nail bed with a clean bandage.
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 icing the injured digit, elevating the injured digit, taking pain medications, and draining the blood beneath the nail.