Childhood traumata, Dexamethasone Suppression Test and psychiatric symptoms: a trans-diagnostic approach.

BACKGROUND: Childhood traumatic events and functional abnormalities of the hypothalamus-pituitary-adrenal (HPA) axis have been widely reported in psychiatric patients, although neither is specific for any diagnosis. Among the limited number of studies that have evaluated these topics, none has adopted a trans-diagnostic approach. The aim of the present research is to explore the relationship between childhood stressors, HPA axis function and psychiatric symptoms, independent of the diagnosis. METHOD: A total of 93 moderate to severely ill psychiatric out-patients of Florence and Pisa University Psychiatric Units and 33 healthy control subjects were recruited. The assessment consisted of salivary cortisol pre- and post-low dose (0.5 mg) Dexamethasone, early and recent life events, 121 psychiatric symptoms independent of diagnosis, SCID, BPRS. RESULTS: In total, 33.5% of patients were Dexamethasone Suppression Test (DST) non-suppressors, compared with 6.1% of controls (p=0.001). Among patients, non-suppression was associated with particular symptoms (i.e. depressive and psychotic), but not to any specific diagnosis. Early stressful life events were significantly associated with higher salivary cortisol levels, with DST non-suppression and with approximately the same subset of symptoms. A recent stressful event seemed to be associated to the HPA response only in those subjects who were exposed to early traumata. CONCLUSIONS: Our report suggests a relationship between life stress, HPA axis and psychopathology. A cluster of specific psychiatric symptoms seems to be stress related. Moreover, it seems that an abnormal HPA response is possibly triggered by an excessive pressure in vulnerable individuals. PMID: 20132583 [PubMed - indexed for MEDLINE

Prevalence study of mental disorders in an Italian region. Preliminary report

Background: Mental disorders are a major public health problem. However, over the last few years, there have been few studies aimed at evaluating their diffusion. Therefore, this study aimed at evaluating: the prevalence of the most frequent psychiatric disorders in the general population residing in Tuscany using a clinical scale administered by trainee in psychiatry. Methods: The study was carried out on a representative sample of the general population aged > 18 years, randomly extracted from the register of patients in the Tuscany region, adopting a proportional sampling method stratified by gender, age group and Local Health Units (LHU). Each person was contacted by letter followed by a phone call from an operator who makes an appointment with the trainee in psychiatry. The diagnostic interview conducted was the Mini-International Neuropsychiatric Interview (MINI). Point and lifetime prevalence by gender and age group were calculated. Differences and associations were considered statistically significant if their p-values were less than 0.05. Results: Of the 408 people involved, 390 people were enrolled (of which 52.6% female). The 28.5% of the sample had been affected by a psychiatric disorder during their lifetime. In their lifetime, the most represented psychiatric disorders were major depressive episode (20.4%), major depressive disorder (17.0%) and panic disorder (10.3%), more frequent in the female than the male group. Current conditions were predominantly major depressive episode (3.1%) and agoraphobia (2.8%). A 5.9% rate of current suicidal ideation was also found. Conclusions: In the general population, 28.5% of people reported a psychiatric disorder during their lifetime. This prevalence is considerably higher than that reported in a previous study carried out in central Italy