The following report is the result of an exploratory investigation through which we seek to understand and interpret the heterosexist and homophobic representations and practices in the AMBA health system, its modes of operation and its effects. For this, we will use, as tools, concepts elaborated from sociology, gender studies, feminism, health sociology, especially from the collective health approach. The idea of ​​the work will be, precisely, to contribute, albeit modestly, to the proliferation of ideas-inputs that help us think about a health system that develops its knowledge and practices from situated and intersectional positions1 recognizing, from respect and care, the multiplicity of the social, the biological, the sexual, etc. Indeed, The final objective of this production is to (re)know the mechanisms of heteronormative violence(s), their ways of operating productively. We also intend to reconstruct the development of collective and individual resistance strategies. In this work we understand by heterosexism one of the many structural dimensions that order and perform the social relations of current Western societies. Homolesbotransphobia, that is, the different types of explicit mistreatment of people who have a dissident sexuality, identity and/or gender expression, is one of the many ways it can express itself. There are also more subtle ones such as silence, exclusion, taking "truths" (heterosexuals) for granted about the subjects, their identity, sexuality, etc.