Inclusion Criteria:  Patients of Chinese ethnicity Patients at least 2 years old Signed informed consent from patient and if applicable from parent(s) or legal guardian(s) in compliance with local requirements Patients with mild to moderate AD and depending on the age:  Patients 2-12 years must have:  - SCORAD Index < 50  Patients 13 years and older must have:  Affecting sensitive skin areas (e.g. face, intertriginous sites, anogenital area) SCORAD Index < 50 and IGA in sensitive skin areas ≤ 3  Exclusion Criteria:  Patients for whom Elidel® is not recommended accordingly to the Package Insert Patients with severe atopic dermatitis (SCORAD Index ≥ 50 or IGA in sensitive skin > 3) Receiving systemic glucocorticoids, antibiotics, antifungals, immunomodulators, inhibitors, antihistamines and ultraviolet radiation therapy within the last 4 weeks before inclusion; Receiving any topical AD-effective drugs within the last 2 weeks before inclusion; Pregnant and/or breastfeeding women Patients or parent(s) / legal guardian (as applicable) that are not able to fulfil study requirements according to physician's opinion Patients or parent(s) / legal guardian (as applicable) that refuse to participate to the study