How long can a patient’s toenail with localized bruising grow back on its own? Generally speaking, this depends on the patient’s own tissue absorption ability, as well as the severity of the bruised toenail and the occurrence of local infection. A. If the patient’s own absorption capacity is strong, the amount of bruising at the toenail is small and no serious local infection has occurred. In this case, the bruised toenail can be completely absorbed and grow back in about a week. Second, if the patient’s own healing ability is not good, toenail bruising at a wide range and local symptoms of infection such as redness, swelling and pain, you need to remove the toenail, remove the local bruising, Vaseline gauze filling drainage, strengthen the wound change anti-infective treatment, this case the wound growth time is slow, generally need 2-3 weeks to grow completely.