News for Healthier Living

Scientists Discover Why We Know When to Stop Scratching an Itch

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 molecular and neural mechanism behind this built-in braking system, shedding new light on how the body regulates itch and why this control fails in chronic conditions.

February 21, 2026


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