Objectives To identify and analyse ethical considerations raised when individuals with body dysmorphic disorder (BDD) consult for non-surgical cosmetic procedures.

Methods Ethical analysis was conducted addressing the issues of best interests and capacity to consent for non-surgical cosmetic procedures in individuals with BDD. Analysis was informed by the findings of semistructured interviews with non-surgical cosmetic practitioners and mental health professionals.

Findings Non-surgical cosmetic interventions were viewed not to be in the best interests of individuals with BDD, as they fail to address core psychological issues, result in dissatisfaction post-procedure, and risk harm. Referral to mental health services was advocated, however numerous obstacles to this were perceived. The issue of capacity to consent to non-surgical cosmetic procedures raised questions regarding whether standard capacity assessment is sensitive to the manner in which BDD may influence decision-making processes. In addition, concerns were voiced that decisions made by individuals with BDD in this context may be judged foolish, and thus wrongly equated with lack of capacity.

Discussion/conclusions Ethical analysis, informed by the available evidence base, suggests that it is generally not in the best interests of individuals with BDD to undergo non-surgical cosmetic intervention, and referral to mental health services is indicated. Analysis of capacity draws parallels between BDD and anorexia nervosa, as decision-making capacity in both conditions can be impaired by pathological values derived from the disorder. Means of differentiating clinical assessment of pathological values from inappropriate value judgements are advocated, in order to safeguard against the latter encroaching into capacity assessment.