1 EXCORIATION (SKIN-PICKING) DISORDER IN ADULTS: A CROSS-CULTURAL SURVEY OF ISRAELI JEWISH AND ARAB SAMPLES Vera Leibovici a , Lorrin M. Koran b , Sari Murad a , Ihab Siam a , Brian L Odlaug c , Uri Mandelkoren a , Vera Feldman-Weisz d , Nancy J. Keuthen e . a Department of Dermatology Hadassah-Hebrew University Medical Center, Jerusalem, Israel. b Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, USA. c Department of Public Health, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark. d Clalit Health Services, Jerusalem, Israel. e Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, USA. Corresponding author: Vera Leibovici MD Phone number: 972-2-6776368 Fax number: 972-2-6244801 E-mail: vleibovici@hadassah.org.il Postal address: Department of Dermatology Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel