Could the neurons that make you scratch be the solution for the itch? Hear about it at Urban Legends and Stranger truths. It can be a relief to scratch the occasional itch, but when itch gets out of control, it becomes a serious health problem. So how does the body know when to stop? Scientists at the University of California, San Francisco, are getting close to an answer. In a break breakthrough that could transform how doctors are treating conditions from Eczema to allergies