Aim: Identify the changes in the self-concept mode of Roy's theoretical model in women undergoing hemodialysis. Method: This is a descriptive study, carried out in a city in northeastern Brazil, which involved 24 women undergoing dialysis treatment due to chronic kidney disease (CKD). Results: The main alterations were: low self-esteem in the personal self and sexual dysfunction in the physical self, in terms of the self-concept mode. Discussion: Women undergoing hemodialysis present self-adaptive problems as in Roy's theoretical model; therefore, nurses should direct their care, emphasizing these adaptive problems. Conclusion: The changes identified in women undergoing hemodialysis were low self-esteem and sexual dysfunction, in terms of the self-concept mode of Roy's theoretical model.