Allergy and immunology deals with problems caused by allergies and other disorders of the immune system. An allergist-immunologist evaluates, diagnoses, and manages disorders of the immune system. Some conditions that this specialist will treat include asthma, rhinitis, eczema, and allergic reactions to drugs, foods and insect bites. Other areas covered by an allergist-immunologist are immune deficiency diseases, problems related to autoimmune diseases, and organ transplantation.