[Multiple chemical sensitivity: epidemiological, clinical and prognostic differences between occupational and non-occupational cases].

Background And Objective: The progressive increase in cases of multiple chemical sensitivity (MCS) syndrome and the lack of studies which associate the syndrome with possible occupational origins means that further research in this field is required. The objective of this study was to compare the epidemiological, clinical and prognostic aspects of cases of MCS of occupational and non-occupational origin.

Patients And Method: Observational study of patients diagnosed with MCS by the toxicology outpatients clinic of the Hospital Clinic of Barcelona between 2002 and 2007.