Anyone who has ever scratched a mosquito bite knows the moment when the urge finally fades and your hand pulls away. For ...

Add Yahoo as a preferred source to see more of our stories on Google. “The phrase ‘scratches your brain’ is often used to describe a sensation that deeply engages your mind, yields a strong emotional ...

Scientists have uncovered a hidden “stop-scratching” signal in the nervous system that tells your brain when enough scratching is enough. The discovery centers on a molecule called TRPV4, which acts ...

Mosquito bites are itchy and we tend to scratch itchy things. The scratching feels good in the short term but tends to hasten and exacerbate swelling and inflammation. This leads to more scratching ...

Scratch-off tickets are big money for state-run lotteries. Is it the promise of winning big that keeps players in the game? Or is there something else happening in the brain? NOVA is available to ...