Peter CM van de Kerkhof is Chairman of the department of dermatology, Radboud University Nijmegen Medical Centre. He has been working for more than 35 years on the pathogenesis and treatment of psoriasis. He has published more than 600 publications in peer reviewed internationally journals and acted as promotor or copromotor in 69 dissertations. He has been president of several international societies, including the European Society of Dermatological Research and the European Dermatology Forum. He is associate editor or member of the editorial board of 11 international Journals. He is past-president of the European Society of Dermatological Research, European Dermatology Forum and the International Psoriasis council.