Real-World Effectiveness, Safety, and 36-Month Persistence of Upadacitinib in Elderly Patients with Moderate-to-Severe Atopic Dermatitis: The 3–6 Month Critical Window and the Role of Early Itch Response and Psychotropic Medication Use - Yaoyao Wang; Xianzhen Chen; Yongdong Wang; Jiang Zhu; Boya Zhang; Defeng Kong; Yudan Tian; Tianze Yu; Haiyan Yu; Kejian Zhu; Hao Cheng (Journal of Clinical Medicine, 2026)