Appearance related distress can affect closeness, social plans, communication, confidence or a wish for reassurance. A guide cannot diagnose BDD, explain the cause of a relationship difficulty or determine whether individual, relationship, medical or other support is appropriate. A careful discussion can explore the concern, its impact, safety and the wider context. Relationships without assumptions Some people notice withdrawal, avoidance of photographs, intimacy difficulties, checking, comparison or repeated reassurance seeking. Others do not. These patterns should not be used to infer a diagnosis, judge a relationship or assume that a partner has caused or can solve the concern. It may help to describe what is happening in neutral terms, listen without arguing about appearance and agree on when wider support might be useful. Appearance, procedures and medical boundaries Skin changes, pain, medication questions, eating changes, injury from exercise or a concern about a proposed procedure may need appropriate medical or specialist advice. A therapist cannot assess a physical condition, approve a procedure or tell someone to delay medical care. Past cosmetic or appearance related choices can be discussed without judgement or assumptions. CBT based support and clinician led safeguards Where clinically appropriate, CBT based support may explore appearance related beliefs, checking, avoidance, comparison, reassurance seeking and relationship impact. Behavioural experiments or exposure based work should be planned collaboratively with an appropriately trained clinician, not treated as a self directed relationship task. The pace and focus depend on assessment, risk, health and personal goals. Urgent safety boundaries If you cannot keep yourself safe, have thoughts of harming yourself, experience psychosis, severe agitation, confusion or a sudden marked change in mental state, seek urgent help. In immediate danger, call 999 or attend A&E. Frequently asked questions Can relationship difficulty diagnose BDD? No. A relationship pattern alone cannot establish a diagnosis. Should a partner give reassurance? The relevant response is individual. A clinician can discuss patterns of reassurance and support without prescribing a rule for every relationship. For related information, see https://lyceumclinic.co.uk/therapy/body dysmorphic disorder/, https://lyceumclinic.co.uk/guides/bdd west london/, https://lyceumclinic.co.uk/guides/bdd and cosmetic procedures/ and https://lyceumclinic.co.uk/therapy/anxiety/. An enquiry can clarify whether CBT based support, medical review, relationship support or another source of help may be the relevant next step.