In this article, we explore the functions that tattoos worn by women with breast cancer or endometriosis have in constructing identities for the wearer and conceptualise the respective illness. Drawing on previous literature on multimodal communication, tattoos and illness, we analyse a sample of 59 different tattoos for their ideational function in constructing identities. A social semiotic analysis shows that lexemes, images, type fonts and intertextuality work together to construct dominant identities for the women wearing the tattoos: as a fighter or warrior, or as a sufferer. The first, metaphoric, identity shows hybrid gendering and constructs the illness as an adversary, while the identity as sufferer often has religious overtones, p...