Health Scientists discover the brain’s hidden “stop scratching” switch by Dr Natalie Singh - Health Editor May 10, 2026 by Dr Natalie Singh - Health Editor May 10, 2026 The Science of the “Stop-Scratching” Signal: How TRPV4 Controls the Itch For anyone who has dealt with a persistent itch, the “itch-scratch cycle” is a familiar and frustrating experience. You … 0 FacebookTwitterPinterestEmail