Study Shows Why Scratching Makes You Itch More

Scratching causes the brain to release serotonin, which intensifies the itch sensation, reveals new study from scientists at Washington University School of Medicine in St. Louis. The findings, in mice, are reported online in the journal Neuron. The same vicious cycle of itching and scratching is thought to occur in humans, and the research provides new clues that may help break that cycle, particularly in people who experience chronic itching. Scientists ...