Objective: to learn the perception of individuals with Systemic Lupus Erythematosus about living with the disease. Method: an exploratory and descriptive research study, of a qualitative nature, carried out with 26 individuals undergoing treatment at the rheumatology outpatient clinic of a university hospital in southern Brazil. The data were collected in the period from February to July 2019, by means of semi-structured interviews that were audio-recorded and subjected to the thematic modality of content analysis. Results: a category entitled: “Fluctuating between good and bad days in living with Systemic Lupus Erythematosus”, composed of two subcategories that portray that living with Lupus is something unstable/fickle, emerged from the results. This is because, as a result of the periods of remission and exacerbation of the signs and symptoms of the disease, the patients experience a paradox of constant oscillation between ups and downs. Conclusion: it was learned that individuals with Lupus perceive that living with the disease is marked by an oscillation between good days and bad days, which are related to periods of remission and exacerbation of the manifestations of the disease, respectively.