Skin Lacerations: How to Treat a Cut, Scrape, Gash, Stab Wound

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This survival-medicine website provides general information, not individual advice. Most scenarios assume the victim cannot get expert medical help. Please see the disclaimer.

Skin Lacerations: How to Treat a Cut, Scrape, Gash, Stab Wound

IN AN EMERGENCY: Treating a wound with no access to medical care right now? This is the post to read.

You can sometimes use duct tape to close a wound. (See step four.)

by James Hubbard, M.D., M.P.H.

You’re cleaning up after the big storm. You’re wearing gloves but grab a pile of rubble that contains some sheet metal. Next thing you know, your glove is red with blood. You cannot get medical help. What do you do?

Basics for Treating All Cuts, Scrapes, Gashes and Stab Wounds:

1. Stop the bleeding.

Apply direct pressure. If it’s a cut finger, squeeze the wound with your other hand. With a larger area, push down with the base of your palm. Use a clean rag if available. Even if it’s a small artery, you can temporarily stop the bleeding by squeezing proximal (closest to the heart) to the wound. A tourniquet is a last resort. Direct pressure is always better if it works.

For Visual Learners

Here’s my video series on how to treat cuts:

  1. Part 1: Stop the Bleeding
  2. Part 2: Assess and Clean the Cut
  3. Part 3: Repair the Cut With Duct Tape

Be careful if you suspect a broken bone underneath. You don’t want to push too hard and move the bone out of place.

As a rule, sharp cuts bleed more than dull, at least at first. (Dull cuts pull more on the blood vessels, causing them to spasm and close more). This has nothing to do with the severity of the cut. Cuts on the face and fingers tend to bleed more (more dense blood supply). If you have a mouth or tongue cut, click here for special instructions.

2. Assess the damage.

Assessing the Wound

For more details on how to assess a wound, click here.

If the blood is squirting out, you’ve cut an artery. Oozing usually means it’s a vein. Arteries are harder to stop bleeding and are more likely to supply blood the tissue cannot do without. Small arteries on the fingers usually quit bleeding after squeezing for 10 or 15 minutes. Veins take less time. If you’ve cut an artery, follow the instructions in this article. Then come back here and continue with these instructions.

To treat small cuts and nicks click here.

To treat stab wounds click here.

Even More Wound Tips—All in One Place!

"The Survival Doctor's Guide to Wounds"Learn as you go!

Take all The Survival Doctor’s wound-treatment tips with you in The Survival Doctor’s Guide to Wounds. You’ll learn about different types of wounds, plus get an interactive guide for quick reference in an emergency.

If the wound is deep and large and won’t stop bleeding without pressure, click here.

To treat other large cuts, gashes or stab wounds, go to step three below.

3. Clean the wound.

The cleaner a laceration is the less the chance for infection. Run it under tap water or use the cleanest water you have. If your tap’s not running, punch a small hole in the bottom of a full plastic jug for extra pressure. If water is scarce, use peroxide. Alcohol is okay, including liquor, but be aware it’s going to hurt worse.

If the wound is more of a scrape, pick out the debris, and wash it. If the dirt is ground in, you may have to scrub a bit.

4. If the cut gapes open, close it.

Head-Wound Tip

Here’s how to close a head wound with hair instead of stitches.

Cuts that gape open can sometimes be closed with tape. Duct tape works well. (If the gash can’t be closed, clean it and pack it with clean rags.) To close the cut, follow these steps:

      1. Dry the wound. If you have some glue apply it to the skin edges (not the actual wound).
      2. Apply a strip of tape to one edge, close the skin gap using your hand, and apply the other side of the tape tightly.
      3. Cover the wound with clean cloth, duct tape, or whatever you have to keep dirt out of it.
No Antibiotic Ointment?

If you don’t have antibiotic ointment, you can use honey (just not on a baby).

The bandage has to be loosened if the area distal (furthest from the heart) to the cut starts turning blue or dark. This discoloration may mean this area is not getting sufficient blood flow and could be permanently damaged. See an expert as soon as possible to try to save the tissue.

5. Keep it clean and dry.

Add some antibiotic ointment if you have it. Cover it with Band-Aids, or cloth and tape, or wrap a cloth around it.


Questions and comments are appreciated.

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Special Instructions Linked to From Above

How to Treat Small Lacerations:

Small nicks or lacerations similar to paper cuts should be washed and bandaged. You can seal them with a little super glue if available. Keep clean and dry.

How to Treat Stab Wounds:

Stab wounds, or puncture wounds, are deeper than they are wide. They’re usually caused by a knife or a stick or something similar. You can’t see the whole damage.

If the chest or abdomen is stabbed, try to approximate the depth by the length of the stick or knife. If you think it may have punctured the chest or abdominal cavity, it becomes more important to seek expert care as soon a possible due to the risk of severe infection.

If the area begins to swell immediately, you may have hit an artery. Apply pressure.

If not severely bleeding, wash as best you can, apply ointment and cover. Keep it clean and dry.

If the wound is deep and large:

It may never stop bleeding without pressure. Pick out any noticeable debris, pack it with clean rags and cover with tape.

  • D

    I accidently cut my arm on the front approx between my wrist and elbow in the middle. It is about 2cm long and 1/2 cm deep. Its clean and doesn’t seem infected. I have washed it put anti bacterial cream on and bandaged it. My question is I can still see tissue and will it heal on its own? I did it nearly 72 hours ago? Will the tissue heal and skin e
    ventually come back together?

    • James Hubbard, MD, MPH

      I couldn’t tell you in your specific case. In general though, a cut that big would heal unless it gets infected, albeit with a scar.

  • Kara

    Hi, I accidentally kicked a knife that fell from the counter. My foot met the point of the knife on the right side of my left foot. It wasn’t bleeding much so I just cleaned it and put a band-aid on it. It’s healed now…its been about a month and a half… It still hurts when any pressure is applied to it though. I can wear shoes and heels just fine without it hurting, but if I actually touch it .. it hurts. Is this normal? Do I need to go get it checked?

    • James Hubbard, MD, MPH

      if there swelling or a knot or if it looks infected then definitely. Otherwise it depends on how much it’s bothering you. Ultimately it’s up to you.

  • A2016

    I cut a strip of skin off the top of my middle finger at work, between the first and second joint. It’s about 1/4″ x 1/8″ and looks like the epidermis is gone, just the spongy looking dermis underneath. It bled quite a bit at first, so I put a bandaid on it and it stopped bleeding about 5-10 min later. Anyway, it’s been 5 days and there’s no apparent sign of heeling, it leaks a small amount of water, but no blood, and no scab formed.
    Will it close up or fill in??

    • James Hubbard, MD, MPH

      It should fill in with scar tissue with time but if it’s no better at all, have a health care person check it out.

  • Sarah

    I just got a stick and punctured my skin, the wound isn’t deep but it still hurts, What do I do?

    • James Hubbard, MD, MPH

      It would depend on how deep and if you’re able to clean it completely. How’s it doing now?


    My great-grandmother, working in her garden, cut the tip off her index finger. In those days, hospitals weren’t just down the street. She wiped off the finger and the fingertip, joined them back together, tied them with a piece of fabric from her dress. After leaving that in place for about a week, she untied it, and the finger had grown back together….. but the tip had slipped, and her fingernail was pointed to the side for the rest of her life.

    A few years ago, I stabbed a small, very sharp knife point into my palm while peeling a potato. A little tap water and soap, and it stopped bleeding. The hole was so tiny, it was barely visible. The next day, Wed., I was in agony. Went to the dr. Got antibiotics. By Fri, my hand was so sore, I couldn’t bend my fingers. The pain was worse than childbirth, migraines and toothaches, combined. Back to the dr. He called local hospitals to find one with a hand surgeon on call for the weekend. Off to UofA Medical Center. The surgeon thought he’d have to do emergency surgery, cutting a zigzag the length of my index finger, and keeping me in the hospital for about 4 days. That tiny little knife prick stabbed the sheath over the vein in my index finger, and it got infected…. not visible to the naked eye, but internally. I cried (it was 5 days before Christmas, and I didn’t want surgery.) They opted for overnight stay, and some really mega-strong antibiotics and morphine thru IV, and said they would wait until morning to decide about surgery. Ten hours later, I was fit as a fiddle and itching to get out of there. All better.

    Point is, injuries that look like they could be fatal, may not be. Ones that look harmless, could have deadly infections inside. You just can’t tell. ALWAYS follow the best available medical info you have (good 1st aid books, or phone calls to ER, etc.) And if there is any unusual pain, swelling, etc., do whatever you can to get to a professional. Everyone believes they could “doctor” themselves, and live off the grid, and brave the worst, but if you aren’t in the absolute worst situation, don’t be adventurous with your health. In all cases, cross your fingers and pray that it’s the lesser of many evil wounds.

    • James Hubbard, MD, MPH

      Thanks for sharing.

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  • Tarah

    Yesterday I nearly cut the top of my middle finger off with a potato peeler.. It’s a long story.. After about 10 minutes I got the bleeding to stop and sealed the cut with super glue them super glued a steri strip over it. Today I woke up with an intense itch all over my hand, not a surface itch but deep in my hand itch. Why is it so itchy!?

    • James Hubbard, MD, MPH

      One possibility is super glue or a steri-strip could cause irritation or a local allergic reaction.

      You could test another finger with the same products and see.

      • Tarah

        Thank you for your quick response! I will try that right now. Though the finger I cut does not itch, just everywhere else. Top of my hand in two places and my palm all over. Could the finger itself not react but areas close to it do? Sorry I’m just confused by this as I have used super glue and steri strip to seal wounds before with no reaction! But I will certainly try putting them both on my other hand to test.

        • James Hubbard, MD, MPH

          There’s no way I could tell for sure about your problem. An example is my previous answer. I assumed it was your finger itching. Since it was the rest of your body, the only thing possibly related to the finger would be if you’re having a systemic reaction to the glue or tape. Again, I can only talk in generalities but if the itching is bad and not getting better, I would suggest seeing a doctor. If it’s not so bad and no rash, perhaps an antihistamine would help.

          • Tarah

            Oh jeez, I’m sorry I am not being very clear at all! It is the palm and back of the hand that is very itchy. The same hand with cut on my middle finger! I am having a hard time with it still. I don’t have insurance which is why I fixed it myself but it looks like I will be going into the doctor if the selling and itching isn’t any better by morning. Thank you for your time!!

  • lakshmi

    shdn’t one squeeze the finger and let the infected blood out in a case of needle stick injury ? increasing the size of the wound/ laceration is not imp here ??

    • James Hubbard, MD, MPH

      I don’t think purposely increasing the size of the wound would be a good idea unless a doctor did it in rare circumstances in sterile conditions. I guess gently squeezing some blood out of a wound might help but very little.

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  • alswearengen

    So a small gash around the thumb knuckle that won’t stop seeping heavily without pressure, for 3 hours now, is a situation where I just keep it wrapped with gauze and pressure by wrapping tape around it? It’s ok then, only when I take it off does it just pick right back up with the heavy seep. I am usually a fast clotter but have been taking horse chestnut for the last week and can only figure that is the culprit. Sister-in-law nurse declares I should be in the ER. At what point to start worrying about the blood situation? Horse chestnut half-life is 20 hours.

    • James Hubbard, MD, MPH

      Every person and every injury is different. The information is for when you can’t get medical help. I’d definitely get it seen if: 1. it’s still bleeding or 2. you’re concerned or 3. if you sister-in-law has seen it and thinks you should go. Your regular family doctor (if he/she treats cuts) or an urgent care clinic might be a good option. But the ER would suffice also.

      • alswearengen

        Thank you. It stopped bleeding with pressure and completely stopped by the time I woke up. I butterflied it and it’s doing fine. It was late at night and the only professional option was the ER and I did not want to get caught up in their web of liabilities and the associated costs. I knew why I wasn’t clotting, well, assuming it’s the Horse Chestnut and high Vitamin C since before taking those I clotted just fine, but when they couldn’t get it to stop maybe they would have had to do expensive tests. The nurse didn’t see it and an ER visit for her is totally different than for others, since she works there so I know how easy it is for her to say, “Go to the ER”. Turned out fine and I appreciate the lack of hysteria on this blog since it helped to calm me down and assess the situation.