I remember it well: our dark winter of itch when the kids were small. It started with a note sent home—years before the pandemic—that my child had been exposed, not to a deadly virus but to lice.

It can be a relief to scratch the occasional itch, but when itch gets out of control, it can become a serious health problem. How does the body know when to stop? Scientists at UC San Francisco are ...

What back scratcher is best? Have you suffered a seemingly unreachable itch? When you have an itch that you can’t reach, it can feel like a cruel joke. Thankfully, the elegant simplicity of a back ...