Will scratching a mosquito bite with a nail stop the itching?

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Offline thedoc

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Mark Galloway asked the Naked Scientists:
   
When I was young my dad always told me that when I get a mosquito bite to take my nail and make a cross on it and it will make it stop itching. Well it did. Is there something to this or is it just psychosomatic?

What do you think?
« Last Edit: 17/07/2012 04:30:01 by _system »