[Sex differences in age of onset, symptomatology and evolution of schizophrenia].

Gender differences in age at onset, symptomatology and course of schizophrenia are examined by analyzing case register data and by direct investigation of a representative sample of first-admitted patients. The main finding that males fall ill at an earlier age than females can be confirmed even after ruling out other interpretations due to sample bias, different time span between real onset and first hospital admission, gender differences in symptom development or other confounding factors. When looking for causes of these gender differences it seems that disturbances in early social development must be understood as a consequence of beginning schizophrenia rather than a prerequisite. The need for explanatory models is stressed that allow for the empirical testing of hypotheses concerning gender specific development of schizophrenia.