Auricular Acupressure for Perioperative Anxiety and Pain in Therapeutic Breast Surgery (ROSA)

Inclusion Criteria: * Female gender * Breast cancer patients undergoing therapeutic breast surgery at Robert Bosch Hospital following an initial diagnosis. * Signed informed consent form. Exclusion Criteria: * An anxiety disorder that has been diagnosed within the last 12 months. * A mental state that, in the opinion of the investigator, prevents the patient from participating in the study. * Use of hearing aids. * Skin irritations or eczema in the ear. * Pregnancy * Insufficient knowledge of German * Unwillingness to store and share personal medical data within the framework of the protocol * Missing or incomplete declaration of consent * Receipt of acupuncture treatment (including NADA ear acupuncture or acupressure) in the last three months.