Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Why do wounds itch as they heal?

  1. Oct 23, 2014 #1

    lisab

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Why do wounds itch as they heal?

    Within reasonable limits, is it a good idea to scratch a healing wound that is itchy?
     
  2. jcsd
  3. Oct 23, 2014 #2
    Helps get rid of the scabby skin
     
    Last edited: Oct 24, 2014
  4. Oct 24, 2014 #3

    lisab

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Sure, that's understandable. But what about internal injuries, like sprains? If an injury was swollen, as the swelling goes down it can itch like crazy. What's going on there?
     
  5. Oct 24, 2014 #4
    hmm I've never experienced that before, interesting
     
  6. Oct 29, 2014 #5

    Pythagorean

    User Avatar
    Gold Member

    Part of the healing process involves histamine, which is well known for its association with itching. Like most neurotransmitters, histamine has multiple functions, so it's not the only interpretation, but it's the word on the street (or in the lecture room, as it were).
     
  7. Oct 29, 2014 #6

    RonL

    User Avatar
    Gold Member

    I'm doing my best to turn 72 in December, one of the few disappointments in growing older has been bumping my arms or hands and break the skin, that being said I have found Neosporin applied under a band-aid does wonders to speed the healing while reducing or eliminating the itch.
     
  8. Oct 29, 2014 #7

    phinds

    User Avatar
    Gold Member
    2016 Award

    It's a guy thing, mostly. Itching makes you remember to pick at the scab so that it will form a scar rather than healing properly. :p
     
  9. Oct 29, 2014 #8

    lisab

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    At least you know how you got the cut! All my life I've found "surprise" cuts that I can't account for how the happened. I usually only use Neosporin on hand and foot wounds, since they're most likely to get infected in my experience.
     
  10. Oct 29, 2014 #9

    phinds

    User Avatar
    Gold Member
    2016 Award

    My hobby is woodworking and I have a garage full of benches and planks and tools and just generally sharp and pokey things and I'm ALWAYS finding minor cuts and bruises. When they happen I just shout a few cuss words and immediately forget all about it, unless it's getting blood on the wood. Then a few days later I'll find a doozy of a bruise and wonder what the hell I did to deserve it. I had so many one time that my doctor started asking questions and after a bit I finally got it that he was probing politely for spousal abuse 'cause he didn't believe I could be stupid enough to do that much to myself. He was wrong. I'm that stupid (careless, actually).

    Anyway, the thing is, I really don't remember bruises itching when I was younger but they sometimes do now. Very annoying. I haven't found anything that helps.
     
  11. Nov 1, 2014 #10
    as the wound heals and the inflamation reduces angiogenesys starts together with remodeling. itching is a good sign that the wound heals more and more. during angiogenesys new nerves, vessels and tiny vessels form(capilaries) by that we sense the itch.
    take a look at the wound healing table. a wound to heal might take a lot. :)

    1024px-Wound_healing_phases.png
     
  12. Nov 3, 2014 #11

    RonL

    User Avatar
    Gold Member

    Yesterday I was cutting some dead branches in my backyard and scraped my skin (just a small hole and short scratch), it bled a lot so I had to stop moving around for a while, I pressed a tissue against it and it sealed up. I started watching the clock and to my surprise it looks to be right on time with the chart.
    I'm not using anything on the wound, I guess I'll be picking at the scab in a few days.:p
     
  13. Nov 3, 2014 #12
    well yes in general it applies but the timetable doesnt apply for all because not all have the same density in platelets in blood for example ;)

    each ones blood is different. in density,pressure,nutricient,platelets etc...

    now there is some interesting research going on about electromagnetic field and wound healing times. it seems that certain wave lengths aid to make a wound heal much faster....
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Why do wounds itch as they heal?
  1. Why do itches spread? (Replies: 1)

  2. Regenerative Healing (Replies: 2)

Loading...