Gender reassignment raises complex ethical issues. It questions gender identity and the right to self-determination. Some highlight the right to access the medical care necessary to live according to one's perceived gender. Others worry about the potential rush into major medical decisions, especially among minors. The need for a medical diagnosis of gender dysphoria can be seen as pathologizing. The requirement for surgery for marital status change, while not mandatory in many places, remains controversial. The balance between informed consent and access to treatment, as well as stigma and discrimination, contribute to the complexity of ethical issues. Finally, the issues surrounding the competence of health professionals, the quality of care and the integration of individual needs make these decisions particularly sensitive from an ethical point of view.