Lacerations | Wounds | Bleeding

Cuts, Lacerations, Wounds and Bleeding


Cuts are open wounds through the skin.  Normally the skin is under slight, constant tension as it covers the body. A cut is a forceful injury to the skin. Many people accidentally cut themselves with household or work items, yard tools, or when operating machinery. Children often are cut during play and sports activities, or from falls while riding wheeled toys, such as bikes, scooters, or skateboards. Most cuts are minor and home treatment is usually all that is needed.

Cuts can be caused by:

  • Blunt objects that tear or crush the skin. These cuts are more common over bony areas, such as a finger, hand, knee, or foot, but they can happen anywhere on the body. Blunt-object injuries usually cause more swelling and tissue damage and leave jagged edges, so problems with healing may occur.

  • Sharp-edged pointed objects pressing into and slicing the skin tissue (incised wounds). Sharp-object injuries are more likely to cut deeper and damage tissue underneath the skin.

  • Sharp-edged objects piercing the skin tissue.

  • A combination of blunt and sharp objects that tear, crush, and slice the skin tissue.

  • Stabbing the skin

  • Squeezing or crushing of the skin

Some types of cuts are more serious and need medical evaluation and treatment. These more serious cuts include:

  • Long or deep cuts.

  • Cuts that open with movement of the body area, such as a cut over a joint. A cut over a joint may take a long time to heal because of the movement of the wound edges.

  • Cuts that may scar and cause a problem with movement or function of a body area. A cut on an eyelid or lip which doesn’t heal well may interfere with function or leave a noticeable scar.

  • Cuts that remove all of the layers of the skin such as slicing off the tip of a finger. This type of cut (called an avulsion injury) may take a long time to heal.

  • Cuts from an animal or human bite. Infection is more likely with a bite injury.

  • Cuts that have damage to underlying tissues. Injuries to nerves, tendons, or joints are more common with cuts on the hands or feet. Slight swelling, bruising, and tenderness around a cut, bite, scrape, or puncture wound is normal. Swelling or bruising that begins within 30 minutes of the injury often means there is a large amount of bleeding or that damage to deeper tissue is present.

  • Cuts over a possible broken bone. Bacteria can get into a cut over a broken bone and infect the bone.

  • Cuts caused by a crushing injury. With this type of injury, the cut may have occurred when the skin split open from the force of the injury. The force of the injury may also damage tissues and blood vessels under the skin. Crush injuries have a high risk of infection.

  • Cuts that have or might have a foreign object such as glass or wood in the wound.

Injury to the skin may also break small blood vessels under the skin and cause more swelling and bruising than you would expect.

Before you clean the wound, try to stop the bleeding.

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