Is the mental health profile of immigrants changing? A national-level analysis based on hospital discharges in Italy.

BACKGROUND: Among asylum seekers and refugees in European countries, several studies have shown a high burden of mental disorders, including post-traumatic stress disorder, anxiety, depression and psychoses. The present study compares hospitalization for mental disorders among migrants arriving from countries typically linked to the refugee phenomenon (putative asylum seekers), migrants arriving from other countries, and natives. METHODS: The study is based on hospital discharge data collected at the national level by the Italian Ministry of Health. Age-standardized hospitalization rates for mental health diagnoses are calculated for the three groups during the period 2008-2015. Differences in type of admission (urgent or planned) and length of stay in hospital are also assessed. RESULTS: Temporal trends show a general decrease of hospitalization rates for mental disorders among both immigrants and natives; however, an increase is observed among young male putative asylum seekers (from 30.3 in 2010 to 43.6 per 10,000 in 2015), mainly due to admissions for "other nonorganic psychoses". CONCLUSION: These findings suggest that in Italy a higher burden of mental disorders might derive from the landing phenomenon, and the increase of hospitalization ascribed to "other nonorganic psychoses" (which is a general and unspecific diagnostic label) might conceal diagnostic difficulties by Italian psychiatrists to recognize atypical pictures associated with traumatic experiences.