The only way to change an allergic constitution is by means of desensitization (also called immunotherapy, hyposensitization, or allergy shots). In desensitization, allergen injections are given in gradually increasing amounts to raise the allergy patient's tolerance to them.
目前唯一能夠改善過敏體質的方法，是進行所謂的「減敏療法」。減敏治療，就是將所測知的特定過敏原，以漸進的方式注射入體內，使患者產生忍受力的方法。