Abstract:Objective To analyze the efficacy of tacrolimus combined with dupilumab in the treatment of moderate to severe atopic dermatitis (AD).Methods The 102 patients with moderate to severe AD admitted to our hospital from February 2018 to February 2023 were prospectively selected, and were divided into the control group and the study group by the random number table method, with 51 cases in each group. The control group was given dupilumab, and the study group was given tacrolimus combined with dupilumab. The therapeutic efficacy was observed after continuous treatment for 3 months. The skin lesions, severity of itching, clinical efficacy, levels of inflammatory factors, eosinophils (EOS) and immunoglobulin E (IgE), and adverse reactions during the treatment were compared between the two groups.Results The differences of the Eczema Area and Severity Index and the Scoring Atopic Dermatitis index before and after the treatment in the study group were greater than those in the control group (P < 0.05). Visual Analogue Scale (VAS) scores before treatment, 1 month after treatment and 3 months after treatment in the two groups were compared, and the results showed that VAS scores were different at different time points (F = 12.658, P = 0.000) and between the two groups (F = 10.457, P = 0.000), where the VAS scores 1 month and 3 months after treatment in the study group were lower than those in the control group. Besides, the change trends of the VAS scores were different between the two groups (F = 8.967, P = 0.000). The overall effective rate of the study group was higher than that of the control group (P < 0.05). The differences of levels of interleukin-4, interleukin-25, thymic stromal lymphopoietin and interferon-γ before and after treatment in the study group were higher than those in the control group (P < 0.05). The differences of EOS and IgE before and after treatment in the study group were also higher than those in the control group (P < 0.05). There was no significant difference in the overall incidence of adverse reactions between the two groups (P > 0.05).Conclusions Tacrolimus combined with dupilumab is effective in the treatment of moderate and severe AD, which ameliorates symptoms and the synthesis of inflammatory factors and reduces the levels of EOS and IgE in a safe and reliable manner.