This paper aimed to present the understanding of the life-world of woman with acquired immunodeficiency virus in the daily life of the (im)possibility of breastfeeding. It is a qualitative research in the phenomenological approach which was developed in a teaching hospital in the southern Brazil. The phenomenological interview and the Heidegger's analysis method were carried out. Founds pointed out that the women showed themselves as a being thrown in the world-with-the-other. This world is described by them with familiarity in the way-of-being of life experience, of to be alone, of impersonality. In conclusion, in the care-world, the possibility to help them in this lived-situation will occur from these understandings. It is to help them to face the diagnosis implications in order to develop a helpful care.
Nursing; Women's health; Acquired immunodeficiency syndrome; Breast feeding