Phenomenology is a philosophical current that aims to observe and describe the meaning attributed to an experience from the consciousness of the person who is living it. While it can be applied to different domains, especially to human care, it describes subjective phenomena such as suffering or quality of life. It constitutes a real discipline, with its epistemology, its specific data (the individual’s narration), its method of analysis to find the speech units of significance, and collaboration between researcher and participant (who becomes a co-researcher). The validity of the method is defined by the fact that the phenomenon becomes intelligible. In the representation of the disease and of the patient, the method is close to ethical principles such as respect of autonomy and optimization of quality of life.