Wash away from the wound. Incision A cut caused by a sharp object such as a knife, razor blade, or piece of glass. Bleeding is a serious problem. Medical help is often necessary in case the wound must be sewn. It is a tear or jagged, irregular wound cause be a hard object such as a rock, machine tool, bicycle or automobile.
Animal bites are also lacerations.
Surrounding tissue is damaged and bleeding may be profuse. A minor laceration can be cleaned with soap and water, but if the bleeding is severe, a pressure dressing may be needed. If the laceration is caused by an animal, medical help is required for testing and treatment of the animal. It is caused by deep penetration of a sharp object such as a pencil, nail, ice pick, bullet, spear or arrow. There may be little surface bleeding, but severe internal bleeding can be present.