This article presents an archaeological inquiry into the early histories of Quality of Life measures, and takes this as an occasion to rethink the concept of the ‘medical model of disability’. Focusing on three instruments that set the ground for the emergence of QoL measures, namely, the Karnofsky Performance Scale, and the classification of functional capacity as a diagnostic criterion for heart diseases and as a supplementary aid to therapeutic criteria in rheumatoid arthritis – I discuss how medicine, throughout the (...) emergence of QoL, began to expand its gaze beyond the confines of the body to what that body does in daily life. Building upon Armstrong et al.’s notion of ‘distal symptoms’ and Wahlberg’s idea of ‘knowledge of living’, I propose the notion of disabilitization to encapsulate this expansion of the clinical gaze, through which medicine has come to articulate diseases and their treatments in new ways, and in so doing, has inadvertently created disability as a new kind of knowledge category in itself – a category that is defined not through its reduction to mere pathology, but through its dispersal into everyday life. I present this concept not as a periodization, but as a provocative discontinuity with the totalizing history assumed within the medical model of disability, and in so doing, ask what, in fact, holds ‘the medical model’ together, and whether there might be other ways of understanding medicine’s complex relationship to disability than what the concept of the medical model allows us to envisage. (shrink)