How does the body know when to stop scratching an itch? New research is giving us more insight. Scientists have long known about the itch-scratch cycle. When an irritant gets on your skin, a ...

The twinge begins in the afternoon: toes. At my desk, toes, itching. Toes, toes, toes. I don’t normally think about my toes. But as I commute home in a crowded subway car, my feet are burning, and I ...

When you scratch an itch, something tells your brain when to stop. That moment of relief, when scratching feels "enough," is not accidental. Scientists have now identified a key molecular and neural ...