Comorbidity between substance use disorders and other psychiatric disorders or dual diagnosis (PD) is characterized by difficulty in their therapeutic approach, constant relapses and hospital admissions, as well as higher violent and criminal behavior. Our objective was to determine the prevalence of PD in individuals treated at a psychiatric center in Arequipa, Peru. It is a descriptive epidemiological study based on analysis of 445 case histories (HC) of patients admitted during the period of three years (2011-2013). Socio-demographic and clinical characteristics of subjects by comparing those who had a diagnosis of PD, with those who had a diagnosis just by consuming psychotropic substances were established. The results show a prevalence of dual diagnosis in 49%.The average ages were M = 31.45, DS = 15.59 in the with dual diagnosis group CPD and M = 33.93, DS = 15.48 in the without du...

El sangrado gastrointestinal masivo causado por uncinarias es raramente reportado. El caso de un paciente varón de 34 años que se presentó con hemorragia digestiva baja con evidencia de infección masiva por uncinarias en la colonoscopia es reportado en este manuscrito. Además, se discute la necesidad de considerar la infección por uncinarias como una posible etiología del sangrado gastrointestinal en áreas endémicas.