Does family history of schizophrenia influence age at onset of schizophrenia? |
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| Authors: | A Shimizu M Kurachi N Yamaguchi H Torii K Isaki |
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| Affiliation: | Department of Neuropsychiatry, Faculty of Medicine, Toyama Medical and Pharmaceutical University, Japan. |
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| Abstract: | The relation between age at onset of schizophrenia diagnosed using DSM-III criteria and the presence or absence of this illness among first-degree relatives was investigated in 2417 patients. The mean age at onset among those with a family history of schizophrenia was slightly and nonsignificantly earlier than that of schizophrenic patients without a positive family history. The former developed their illness before the age of 25 years more frequently than did the latter. |
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| Keywords: | schizophrenia age at onset family history. |
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