“…As Fainzang puts it, the patients' behaviour and discourse in relation to medication reveal their ways of understanding their bodies, of analysing the illness and of relating to the prescribing doctors . In the context of fibromyalgia, these processes have been described and analysed in an article about the ways in which patients, diagnosed with fibromyalgia, categorize different medications on the basis of their route and mode of action in the organism and of their effects on painful symptoms . Based more precisely on the approaches to common/ordinary knowledge about the body and the physiological functions, this article analyse how fibromyalgia is constructed on the basis of lay‐knowledge concerning physiological functioning, as described by past research by Durif‐Bruckert …”