What Makes Us Itch?

It's well known that mosquito bites and poison ivy cause itching, but some serious illnesses — including kidney failure and HIV — can also send a person scratching. An international meeting on itch just ended; we'll talk with one of its organizers about what makes us itch and how to make it stop.

Earl Carstens, professor of neurobiology, physiology and behavior, University of California Davis



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