Scratch That Itch: Science Explains Why It Feels Good But Worsens Bug Bites

New mouse studies show scratching bug bites increases swelling by triggering mast cells via pain signals and histamine, creating an itch–scratch cycle. Menthol and anti-itch creams can temporarily relieve, and researchers are pursuing targeted treatments (MRGPRX2 blockers). In the meantime, avoid scratching and use hydrocortisone, calamine, or oatmeal baths to calm itch.