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Itch and Scratching: Nerves, Microbes, and Social Contagion
Itch is stranger than it seems, and its causes are debated. These explanations range from the skin's ecosystem of nerves and bacteria to the brain's dedicated itch circuits, how itching spreads socially like a contagion, and how scientists design experiments to trigger it. You can weigh what might finally break the itch-scratch cycle.
Itch · 70 stops · ~140 minFree