Why Do Wounds Itch While Healing? Any Thoughts?

Under the scab of a wound the new skin and cell growth causes the itch. I know it is annoying but it's a good thing because it is a positive sign of healing.

hi dear friend good question..i checked the net for an answer this is the best explanation i could get: Surely not all not all the sensations of the human body (or any other body) are the outcome of evolutionary selection. It doesn't seem surprising that the body experiences particular, unusual, sensations when new skin or scar tissue is being grown. Doesn't new tissue contain new nerves? At least there must be some metabolic mechanism that "connects" the newly grown tissue with the nervous system, so that you would feel a painful sensation if someone pinched your (freshly grown) scar tissue. What sensation does the body experience when that "connection" begins to be made? Maybe the metabolic processes by which the scab begins to separate from the wound when the healing is nearly complete (which is often the point at which the itching starts) produce the itching sensation. Whatever the bio-mechanical origin of the itching, it is maybe just a side-effect of the repair process that serves no purpose of itself, but that is just part and parcel of a bodily repair system that obviously HAS evolved to high degree of sophistication to perform a task that confers major gene-survival advantages.

I think it is because the skin pulls and is very dry around the edges of the wound. I don't really know, but sometimes it can itch like crazy. Seems like it never gets satisfied until it is bleeding again.

I recently wondered this myself as I just had my stiches out and they itch like crazy! I do think the newly grown connections is an answer, but I also ponder this: Would it not make sense that the itching causes scratching wich in turn helps to keep the skin somewhat stimulated and causes better blood flow to the area? Just a thought from a common sense kind of girl. Thanks for your post, it was quite helpful.