New in paperback. Hardcover was published in 2019. Ushiyama takes the case of eczema (atopic dermatitis) - a chronic condition with a history of patient-led controversy over treatment methods - as a case study in how patient knowledge has come to affect change in medical practice. Comparing ethnographic fieldwork from Japan and the UK, she builds a complex picture of the differences in approach to treatment in light of attitudes to patients' knowledge.