Joseph Carey Merrick (5 August 1862 – 11 April 1890), sometimes named incorrectly as John Merrick, was an Englishman with severe deformities who was exhibited as a human curiosity named the Elephant Man.
The exact cause of Merrick's deformities is unclear. The dominant theory throughout much of the 20th century was that Merrick suffered from neurofibromatosis type I. In 1986, a new theory emerged that he had Proteus syndrome. In 2001, it was proposed that Merrick had suffered from a combination of neurofibromatosis type I and Proteus syndrome.
