WASHINGTON (AP) — 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?

You scratched that bug bite and now it's a big itchier bump

WASHINGTON (AP) — 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?