IL17A and psoriasis: Following the worsening of the patient’s recurring symptoms, he was re-admitted to our department, where we integrated the opinions of multidisciplinary experts, such as dermatologists, rheumatologists, and immunologists, to initiate the IL-17A inhibitor, secukinumab, therapy at a dose of 300 mg (1 time/week for 5 weeks; maintenance treatment once every 4 weeks) via subcutaneous injection to control psoriasis symptoms, in combination with IVIg (total dose of 2.0 g/kg, divided into 5 days) and azathioprine(100 mg/day) treatments as the maintenance therapy.