You scratched that bug bite, and now it's a big, itchy bump. Some science explains why scratching really can make things worse, even if you don't break the skin.
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, … [+4322 chars]
A lot of things can cause itchiness, … [+4322 chars]