Informal and popular healthcare subsystems in a remote rural municipality in the Brazilian Amazon region.

Introduction: While Brazil has achieved a significantly higher coverage through primary care and improved health outcomes through the Family Health Strategy, rural areas still have worse indicators and several barriers to access primary healthcare units, which sometimes condition users to seek alternative answers outside the formal circuit. From the framework of medical anthropology, Arthur Kleinman indicates that the sociohistorical-cultural context also determines the search for health care, and not only by the conditions of access and availability of formal services. From this perspective, each health system would consist of three interrelated subsystems: the informal, the popular, and the professional subsystem, widely used in an overlapping and non-exclusive way, interacting according to an individual's needs.