FDA-approved arthritis drug may work in new ways to fight itch. Researchers have found that a certain immune signaling molecule is key in activating neurons in the skin that cause chronic itching, the roots of which have long been a mystery.

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FDA-approved arthritis drug may work in new ways to fight itch. Researchers have found that a certain immune signaling molecule is key in activating neurons in the skin that cause chronic itching, the roots of which have long been a mystery.