Please call 911 immediately if you are having chest pain, difficulty breathing, severe bleeding, sudden weakness or numbness, or if you think you have a medical emergency.
Cuts - Topic Overview
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
(lacerations
). These cuts are more common over bony
areas, such as a finger, hand, knee, or foot, but they can occur 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 objects pressing into and slicing the skin tissue (incised wounds). Sharp object injuries are more likely to cut deeper and damage underlying tissue.
- Sharp-edged objects piercing the skin
tissue (stab or
puncture wounds).
- A combination of blunt and sharp forces from objects that tear, crush, and slice the skin tissue.
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 affect the appearance or function of a body area. A cut on an eyelid or lip which does not heal well may interfere with function or leave a noticeable scar.
- Cuts that remove all of the layers of the skin (avulsion injuries), such as slicing off the tip of a finger. 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.
- 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 underlying tissues and blood vessels. Crush injuries have a high risk of infection.
- Cuts with a known or suspected object, such as glass or wood, in the wound.
Cuts to the head or face may appear worse than they are and bleed a lot because of the good blood supply to this area. Controlling the bleeding will allow you to determine the seriousness of the injury. For more information, see are stitches, staples, or skin adhesives necessary?
When you have a cut:
- Stop the bleeding. For more information see
how to stop bleeding.
- Determine whether other tissues, such as blood vessels, nerves, tendons, ligaments, joints, bones, or internal organs, have been injured.
- Determine whether evaluation and treatment by a doctor is needed.
- Clean the wound and remove any dirt or debris to prevent infections, both bacterial skin infections and tetanus ("lockjaw").
- Determine if you need a tetanus shot.
Review the Emergencies and Check Your Symptoms sections to determine if and when you need to see a doctor.
WebMD Medical Reference from Healthwise
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