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 ...

BETHESDA, MD – 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 ...

Researchers identify the TRPV4 ion channel as the body's internal "stop scratching" signal, offering new hope for chronic itch relief.

Researchers identify a neural circuit in the lateral hypothalamus that suppresses itch during acute stress, offering new insights into chronic itch management.

Scientists are studying a mechanism that helps tell the brain to stop scratching.