The present disclosure provides methods for treating allergy comprising selecting a patient with an allergy and administering a therapeutically effective amount of an IL-4/IL-13 pathway inhibitor (e.g., an anti-IL-4 receptor antibody or antigen-binding fragment thereof) in combination with a therapeutically effective amount of an agent that depletes plasma cells (e.g., an anti-BCMA/anti-CD3 bispecific antibody). In certain embodiments, a plasma cell ablating agent such as an anti-BCMA/anti-CD3 bispecific antibody ablates the plasma cells, including IgE+ plasma cells, while the IL-4/IL-13 pathway inhibitor prevents the generation of new IgE+ plasma cells, thus eliminating allergen-specific IgE in the patient.