Introduction: Currently there are few studies regarding the evaluation of attitudes and self-perception of knowledge of health professionals towards patients with some mental health condition, and the relationship of these variables with decision making regarding these patients. From experience, its known the difficulty that doctors who are not related to the area of mental health have in dealing with patients with some psychiatric pathology and even more so in emergencies, either because they recognize a lack of knowledge of the subject and instances that are not suitable for evaluation. in addition to the high demand of these services. Methodology: The study consisted of a cross-sectional online survey applied to health professionals belonging to the Dr. Hernán Henríquez Aravena Hospital, located in the city of Temuco, Chile. The survey included sociodemographic questions, characterization of experiences associated with mental health diagnoses, and scales dedicated to measuring variables (self-perception, attitudes and decision making). Results: As self-perception of knowledge grows, the effect of attitudes on decision making also increases. Conclusions: Both the attitudes of health professionals towards this type of patients, as well as their self-perception of knowledge, are two fundamental components to ensure good clinical management. It is important that there is a balance in how both are managed within a service, in order to ensure appropriate care focused on the patient's well-being.