Consent from a patient is needed regardless of the procedure – whether it's a physical examination, test, or type of medical treatment. This must be given following an explanation by a clinician. The principle of consent is an important part of medical ethics and International Human Rights Law.
All clinicians have a duty of care to understand and apply the legal and ethical principles which underpin consent to treatment. These principles are explained in the BAD’s Guide to Validating Consent for Dermatology Examinations or Treatments 2017. Additional GMC guidance for doctors sets out the consent principles on which good clinical decisions should be based, including cosmetic interventions.