Immunotherapy (desensitization) is the use of gradual exposure of low dose allergens to the patient (either through skin injections or sublingual treatments, below the tongue). Success rates have been demonstrated to be as high as 80-90% for certain allergens. However, this is a long-term process; noticeable improvement is often not observed for 6-12 months, and, if helpful, therapy should be continued for 3 years. The common allergen we desensitize patients in Singapore are the dust mites.
Please see common condition on Allergic Rhinitis for further information