[A modern Kaspar Hauser].
OBJECTIVE AND METHODS: The case of a mentally disturbed young man is described, whose identity could not be revealed over more than four months. It is compared to Kaspar Hauser, similarities and differences are highlighted. RESULTS: The "Kaspar Hauser of Stuttgart" is retrospectively revealed as a young man with experiences of severe deprivation. The missing case history and independent history were an obstacle in the treatment, albeit not fundamental, advantages being reached with a relation-oriented approach. CONCLUSIONS: Informations obtained after clarification of the identity of the young man suggest a multiplication of unfavourable circumstances, leading to sub-optimal treatment and finally the "Kaspar-Hauser-Situation". Contributing were his belonging to the less integrated group of migrants in Germany, as well as severe deprivation in the family and a generally sub-optimal treatment of mentally disturbed young patients.