You step on a nail in the garage. Your child comes inside crying after getting a splinter. You accidentally stab your hand with a kitchen knife while cooking.
Accidents happen. Sometimes they’re small. Sometimes they’re painful. And sometimes, what looks like a minor injury can actually be more serious than it seems.
Puncture wounds are a common type of injury that can occur anywhere: at home, in the yard or at work. They often look small on the surface but because they can penetrate deep into your skin they can cause serious problems if not treated properly.
To better understand these injuries, we asked Shane Reynolds, PA, an emergency medicine physician assistant at Banner Urgent Care, to explain what you should know about puncture wounds.
What is a puncture wound?
A puncture wound happens when a sharp, pointed object pushes through your skin.
“A puncture wound is normally a wound with a narrow opening and minimal external bleeding, but can extend deeper into the tissue,” Reynolds said.
Unlike a cut or a scrape, which is often wide and bleeds noticeably, a puncture wound can damage tissue, nerves or blood vessels.
Common causes include:
- Nails
- Needles
- Knives
- Animal bites
- Splinters
- Thorns
- Broken glass
Why puncture wounds can be risky
Because puncture wounds are narrow and deep, they often don’t bleed much. That may sound like a good thing but bleeding actually helps flush out germs.
“The small opening makes it difficult to completely flush out the wound,” Reynolds said. “Foreign materials, such as dirt, rust or other contaminants, may become embedded, increasing the risk of infection.”
Animal and human bites are puncture wounds that carry a high risk of infection. Some bites may require antibiotics or a rabies evaluation.
Puncture wounds also carry a risk of tetanus, a serious bacterial infection found in soil and dust.
Normal symptoms or signs of infection
Right after a puncture, you may notice:
- Pain or tenderness
- Mild swelling
- Redness around the area
- Light bleeding
These symptoms are normal at first but you need to watch for signs of infection. An infection may develop within 24 to 48 hours.
Signs of infection to watch for:
- Increasing pain or redness
- Warmth around the wound
- Swelling that gets worse
- Pus or drainage
- Red streaks spreading from the wound
- Fever, chills or swollen lymph nodes (these may indicate a serious infection)
How to treat a puncture wound
If the wound is small, shallow and not heavily bleeding, it may be treated at home. But you still need to take it seriously. Reynolds explains the steps to follow:
- Stop the bleeding: Immediately after the injury, apply gentle pressure to stop any active bleeding and elevate the injured area if possible.
- Leave the embedded object in place: If an object is deeply embedded in the skin, you should leave it in place because removing it may increase bleeding or cause further damage. Then seek immediate medical attention (call 911 or go to the nearest emergency room).
- Clean the wound: Rinse the wound with running water for five to 10 minutes. Use mild soap around the wound but not directly on it. Do NOT use hydrogen peroxide or rubbing alcohol, as these products can damage tissue and delay healing.
- Protect the wound: You may apply an antibiotic ointment (such as Neosporin) in a thin layer, then cover the wound with a bandage or dressing. Change the bandage daily or sooner if it becomes wet or dirty.
Small puncture wounds may heal within a few days. Deeper wounds can take one to two weeks or longer.
As the wound heals, you may notice mild soreness, slight scabbing and itching. These are normal signs of healing.
When to go to the urgent care versus the emergency room
Not all puncture wounds can be safely treated at home.
“Most minor puncture wounds can be treated at home but it’s always better to err on the side of caution and seek professional medical evaluation when in doubt,” Reynolds said.
See your health care provider or go to the nearest urgent care if:
- The wound is deep, more than half an inch
- An object is embedded in the skin or body
- Bleeding does not stop with 10 minutes of pressure
- The puncture comes from a dirty or rusty object
- It’s caused by an animal or human bite
- The wound is on the face, hands, feet, joints or near vital areas
- Signs of infection develop
- It’s caused by a high-pressure injury, like a nail gun or pressure washer
- You have immune-compromising conditions, circulation problems or diabetes
- You are unsure of your tetanus immunization status
Call 911 or go to the nearest emergency room if:
- Bleeding is severe and won’t stop
- The object is deeply embedded
- You experience numbness or loss of movement
- You feel faint or weak
- You notice signs of serious infection, like spreading redness, fever or red streaks
Reminder: Do not try to remove large, embedded objects yourself, as this can cause more damage.
Do you need a tetanus shot?
Yes. “Update your tetanus immunization status after a puncture wound,” Reynolds said. “For minor wounds, a booster is recommended if your last shot was more than 10 years ago. For deeper wounds, it’s recommended if it’s been more than five years.”
Tetanus bacteria can enter the body through puncture wounds, especially those caused by dirty nails or outdoor injuries. Staying up to date on vaccines is one of the best ways to protect yourself.
Special concern: Puncture wounds in the foot
Foot puncture wounds are common, often caused by stepping on nails, tacks or other sharp objects. These injuries can be more serious because:
- The object may go deep
- Shoes can push bacteria into the wound
- You may not see how deep it is
If you have diabetes, foot wounds require extra attention. Diabetes can reduce blood flow and slow healing. Even a small puncture can become a serious infection. Learn more about diabetes wound care.
If you have numbness in your feet, you may not feel how deep the injury is. When in doubt, get checked out.
How to prevent puncture wounds
Accidents can’t always be avoided but you can lower your risk:
- Avoid walking barefoot, especially outside or in the garage
- Handle sharp objects with care
- Wear safety gear such as gloves and goggles
- Clean up work areas and dispose of sharp objects properly
- Keep sharp objects out of reach of children
Takeaway
It’s easy to dismiss a small wound. Life is busy and it might seem like a tiny hole. But puncture wounds can be deceiving. Even minor wounds can become infected. If you’re unsure, seek medical advice. Quick action makes a difference.
Find a Banner Health specialist, an urgent care center or an emergency room near you.
