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Sometimes, when I bend over, areas of my skin like my back can suddenly itch quite intensely. Sometimes it may be another part of my body and the pattern seems to be a part of the skin organ that is not used to stretching quite that much in that spot, perhaps the skin not being so flexible there.

I realise that temperature, dryness, and a whole lot of other external and internal factors can come into play, but if my scenario is not too broad, and I'm pretty sure it's a universal trait in skin physiology, (and I don't have any skin allergies either), what is the basic science behind this phenomenon of skin stretching when it's not used to it, and you do it very suddenly?

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closed as off-topic by Bez, Chris, The Last Word, Devashish Das, WYSIWYG Aug 8 at 4:59

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Personal medical questions are off-topic on Biology. We can not safely answer questions for your specific situation and you should always consult a doctor for medical advice." – Bez, Chris, Devashish Das, WYSIWYG
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Do you have stretch marks around the area that itches? –  The Last Word Jul 18 at 5:49
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No the stretching is only minor and the itching momentary (though sharp). The interest is due to the idea that when you stretch the skin, new skin cells are created and it essentially starts expanding if you keep stretching it enough (consistently). So biologically, I wonder what is happening with skin cells when you are doing momentary stretches to skin that isn't already 'expanded' enough for the task, so to speak. I wonder what is happening with the skin cells, because the itch sure is interesting and prominent, biologically. I do think dryness of air/skin is a big factor though, but still. –  foregon Jul 18 at 8:01
    
you mean relationship between ncbi.nlm.nih.gov/pubmed/21767766 and humankinetics.com/excerpts/excerpts/… –  Devashish Das Jul 18 at 9:08
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I suppose, yes! :) Though not a blanket topical enquiry, more a specific application. –  foregon Jul 18 at 9:27

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