This Study is a Non-interventional Disease Registry of Adolescent and Adult Patients With Atopic Dermatitis Who Initiate or Switch Any Systemic Treatment

Inclusion Criteria: * Patients aged more than or equal to (≥) 12 years at the time of consent. * Confirmed diagnosis of AD, of any severity, according to the Investigator's assessment as aligned with International Classification of Diseases 10th revision (ICD-10) code of L20. * Prescribed and scheduled to initiate any systemic treatment for AD (including but not limited to biologics, oral Janus kinase (JAK) inhibitors, cyclosporine, azathioprine, methotrexate, mycophenolate mofetil) * Signed informed consent for registry participation by the patient or parent/legal representative and assent by the patient appropriate to the patient's age, including willingness to participate in long-term follow-up. Exclusion Criteria: * Concurrent participation in an interventional clinical trial that administers an investigational drug that modifies patient care. * Insufficient understanding of the study by the patient and/or parent/guardian. The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.