Wounds include cuts, scrapes, scratches and punctured skin. They often occur as a result of an accident or injury, but surgical incisions, sutures, and stitches also cause wounds. Minor wounds usually aren't serious, but even cuts and scrapes require care. To avoid infection and aid healing
Serious and infected wounds require medical attention. You should also seek attention if the wound is deep, you cannot close it yourself, you cannot stop the bleeding or get the dirt out, or it does not heal.
References and abstracts from MEDLINE/PubMed (National Library of Medicine)