• Question: Why do moscito bites itch?

    Asked by niamhw53 to Faye, Martin, Mus, Pete, David, Tess, Yue on 25 Apr 2012. This question was also asked by ellascientist.
    • Photo: Pete Etchells

      Pete Etchells answered on 25 Apr 2012:

      Great question! When mosquitoes bite you, they inject the bite with a goo that stops your blood from coagulating (i.e. drying up). This expands the blood vessels expand with the goo, the nerves in that particular area of skin become irritated because of the swelling – and that’s what causes the itch!

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