Simplify the following text for a Grade 8 native English-speaking person.
Original: In his practice , Freud had a patient who would today be diagnosed with the disorder : Russian aristocrat Sergei Pankejeff ( nicknamed `` The Wolf Man '' by Freud himself in order to protect Pankejeff 's identity ) , had a preoccupation with his nose to such an extent it greatly limited his functioning .
Simplified: Sigmund Freud had an important Russian person ( Sergei Pankejeff ) with him in the past , who would have been classified as having the disorder in modern times . Freud named him `` The Wolf Man '' , to protect Pankejeff 's identity .