WASHINGTON You've likely heard it since childhood: Don't scratch that bug bite or rash, you'll make it worse. But why would something that feels so good be bad? A lot of things can cause itchiness, …

WASHINGTON You've likely heard it since childhood: Don't scratch that bug bite or rash, you'll make it worse. But why would something that feels so good be bad? A lot of things can cause itchiness, …



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