Appearance related distress can involve checking, camouflage, comparison, avoidance, rigid exercise or diet rules, skin focused behaviours or a sense that a particular feature is unacceptable. A guide cannot diagnose body dysmorphic disorder, muscle dysmorphia, an eating disorder, a skin condition or another explanation for an individual’s concerns. Understanding terms without self diagnosis Diagnostic manuals include a muscle dysmorphia specifier within body dysmorphic disorder. Some people use other informal terms to describe dissatisfaction with muscularity, skin, hair or other features. These descriptions can help a person explain their experience, but they cannot establish a diagnosis, cause or treatment plan. Context, distress, repetitive behaviours, physical health, substance use, eating patterns, daily functioning and safety all matter. When specialist or medical support may be relevant Skin damage, infection, severe changes in eating, injury from exercise, use of anabolic substances, medication questions or cosmetic procedure decisions may need medical, dermatological, substance use, dietetic or specialist assessment. Those concerns should not automatically be treated as an anxiety or body image problem. A therapist cannot advise on stopping medication or substances, prescribe a diet or exercise plan, or decide whether a cosmetic procedure is medically appropriate. Therapy and clinician led safeguards CBT based support may explore appearance related thoughts, checking, avoidance, comparison, shame or compulsive patterns where clinically appropriate. Exposure based or behavioural work should be planned collaboratively with an appropriately trained clinician, not treated as a self directed challenge. The pace and focus depend on assessment, risk, health and the person’s goals. Urgent safety boundaries If appearance concerns are accompanied by inability to stay safe, thoughts of harming yourself, severe restriction, purging, serious physical deterioration, psychosis, 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 I identify a BDD subtype from online information? No. Online descriptions may help you describe concerns, but diagnosis and the appropriate support require individual assessment. Can I undertake exposure work alone? No. Exposure based work should be planned with an appropriately trained clinician where it is being considered. For related information, see https://lyceumclinic.co.uk/therapy/body dysmorphic disorder/, https://lyceumclinic.co.uk/guides/bdd and cosmetic procedures/, https://lyceumclinic.co.uk/guides/mental health weight diet movement/ and https://lyceumclinic.co.uk/therapy/anxiety/. If appearance concerns are affecting daily life, an enquiry can clarify whether CBT based support, medical review, specialist care or another source of help may be the relevant next step.