The personality abnormality is a remarkable characteristic in schizophrenia. Some evidence to date indicated that there existed measurable scores of personality traits in schizophrenic patients, though the psychotic symptoms were concomitant. The psychotic symptoms were deemed to influence the assessment of personality traits in schizophrenia for the symptoms and personality abnormality were entangled tightly. Yet, it cannot exclude the personality pathology in the psychopathology of schizophrenia. Moreover, the personality abnormality was related to cognitive deficit, prognosis, and insight in schizophrenics. It was difficult to disentangle the relationship between personality psychopathology and schizophrenia. Spectrum, pathoplasty, and etiology model each could explain the relationship partially. An integrated viewpoint incorporating all three models was discussed. However, it needs further researches to investigate some important issues such as the physiological basis and psychological mechanism of the relationship, the influence of culture on personality assessment.
