The disclosure is directed to methods, treatment regimens, uses, kits and therapies for treating Generalized Pustular Psoriasis (GPP). These methods, treatment regimens, uses, kits and therapies utilize, inter alia, administration of an IL-17 antagonist, e.g., an IL-17 antibody, such as secukinumab. Additionally disclosed are improved methods for treating plaque-type psoriasis that utilize up-titration and down-titration of the IL-17 antagonist, e.g., an IL-17 antibody, such as secukinumab, as well as modification of dose frequency. Further disclosed are methods of treating palmoplantar pustular psoriasis using the disclosed IL-17 antagonists, e.g., IL-17 antibodies, such as secukinumab.
