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Samuel Hafenreffer
German physician (1587–1660) From Wikipedia, the free encyclopedia
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Samuel Hafenreffer (26 April 1587 – 26 September 1660)[1] was a German physician, who in 1660 introduced the definition of pruritus. Pruritus is the "unpleasant sensation" the body produces that provokes a person to scratch themselves.[2] Hafenreffer is also credited as being the author of the first textbook in German speaking countries on the subject of dermatology.[3]

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