Immunotherapy (desensitization) is the only currently available cure for allergy. Most people receiving appropriate immunotherapy can expect significant improvements in their symptoms, with reduced need for medication. Large studies have shown an approximately 20% improvement at 1 year and 40% improvement at 3 years, with benefit evident as early as 1 month after commencing treatment. This benefit usually persists for a number of years after treatment is ceased. It is indicated in moderate-to-severe allergic rhinoconjunctivitis, when the allergen is unavoidable and symptoms are not well controlled by medical management. Other indications are allergic asthma and immunotherapy may also be of benefit in some patients with severe eczema. Immunotherapy is not indicated for food allergy.