Stress and multiple sclerosis: A systematic review considering potential moderating and mediating factors and methods of assessing stress.

Research about the effects of stress on multiple sclerosis has yielded contradictory results. This study aims to systematically review the evidence focusing on two possible causes: the role of stress assessment and potential moderating and mediating factors. The Web of Knowledge (MEDLINE and Web of Science), Scopus, and PsycINFO databases were searched for relevant articles published from 1900 through December 2014 using the terms "stress*" AND "multiple sclerosis." Twenty-three articles were included. Studies focused on the effect of stress on multiple sclerosis onset (n = 9) were mostly retrospective, and semi-structured interviews and scales yielded the most consistent associations. Studies focused on multiple sclerosis progression (n = 14) were mostly prospective, and self-reported diaries yielded the most consistent results. The most important modifying factors were stressor duration, severity, and frequency; cardiovascular reactivity and heart rate; and social support and escitalopram intake. Future studies should consider the use of prospective design with self-reported evaluations and the study of moderators and mediators related to amount of stress and autonomic nervous system reactivity to determine the effects of stress on multiple sclerosis.

Posttraumatic stress disorder comorbidity and clinical implications in patients with severe mental illness.

Traumatic experiences and posttraumatic stress disorder (PTSD) are more frequent in patients with serious mental illness than in the general population. This study included 102 patients with schizophrenia, bipolar disorder, and schizoaffective disorder, according to Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) criteria. Epidemiological and clinical data were collected using the Brief Psychiatric Rating Scale and Traumatic Life Events and Distressing Event questionnaires. We found a high number of traumatic experiences, and 15.1% of the patients met all criteria for PTSD. We found no differences based on diagnosis or sex, although there was a nonsignificant trend toward greater PTSD comorbidity in women. Among patients with serious mental illness and PTSD, 64.3% had made some attempt at suicide at some point in life, compared with 37.4% of patients without PTSD.

Prevalence and clinical impact of childhood trauma in patients with severe mental disorders.

A high prevalence of childhood abuse has been reported in patients with severe mental illness. We conducted a cross-sectional study of 102 patients with schizophrenia, bipolar disorder, or schizoaffective disorder. Social, demographic, and clinical data were obtained. Patients were evaluated using Brief Psychotic Relative Scale, and Traumatic Life Events and Distressing Event questionnaires. Almost half (47.5%) of these patients had suffered some kind of child abuse, and our results confirmed a relationship between a history of childhood abuse and more severe psychosis. Diagnosis of schizophrenia was determined 4.1 years earlier in victims of childhood abuse. Hospital admissions were twice as high in victims of psychological abuse. Patients with a history of sexual abuse were more than twice as likely to attempt suicide (68% vs. 28.9%).