Migration and schizophrenia.
OBJECTIVE
Since the beginning of the human race, individuals have migrated alone or in groups. This process of migration has often been considered to be an aetiological factor in the genesis of many mental disorders.


METHODS
Two studies collecting rates of first onset schizophrenia in Trinidad and in London using the same assessment instruments.


RESULTS
The sending countries have low rates of schizophrenia. The impact of migration itself produces high stress but rates of schizophrenia are even higher in the second generation, suggesting that that other social factors may be responsible for the increase if genetic vulnerability is excluded.


CONCLUSIONS
Individual social factors, such as cultural identity and the impact of racism, are more likely to play a key role in the genesis of schizophrenia.
Bhugra
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Institute of Psychiatry, De Crespigny Park, London, UK.
D003466:Cultural Characteristics; D004641:Emigration and Immigration; D006801:Humans; D015994:Incidence; D008131:London / Q000453:epidemiology; D012307:Risk Factors; D012559:Schizophrenia / Q000208:ethnology* / Q000235:genetics* / Q000503:physiopathology; D012919:Social Behavior; D013315:Stress, Psychological; D014300:Trinidad and Tobago / Q000208:ethnology