Everything About Allergy

An allergy specialist, or allergist-immunologist, is a medical doctor that has undergone years of training to be able to manage and treat allergic diseases such as asthma. In the United States, before one becomes an allergist-immunologist, one has to complete medical school, then undergo three years of training for internal medicine or pediatrics. After that, one has to pass the American Board of Internal Medicine or American Board of Pediatrics. In the US, allergy-immunology is a sub-specialty of internists or pediatricians, where another two-year training is needed, and a certifying exam of the American Board of Allergy and Immunology should be passed.

Source: Wikipedia