You scratched that bug bite and now it's a big itchier bump. Some science explains why scratching really can make things worse, even if you don't break the skin.
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?
A lot of things can cause itchiness, sometimes serious diseases. Whatever the caus... [4708 chars]