- Previous exposure to Secukinumab or other drug targeting IL-17A or its receptor; use of sensitizing therapy for alopecia areata including DPCP, squaric acid, DNCB within 1 month; PUVA, or any form of phototherapy within 1 month; use of any immunosuppressive therapies (systemic corticosteroids, methotrexate, azathioprine, mycophenolate mofetil, cyclosporine) within 1 month; or use of topical therapies (two weeks). All the above therapies will not be allowed during this study.