Pediatric allergy-immunology is the field of medicine that deals with problems caused by allergies and other disorders of the immune system. A pediatric allergist-immunologist evaluates, diagnoses, and manages disorders of the immune system in infants, children and adolescents. Some conditions that this specialist treats 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.

Doctor density varies by specialty and location. Massachusetts has 8 practicing pediatric allergy and immunologists. Broken out by city, pediatric allergy and immunology doctor density in Amherst is 1, in Boston is 5, in Cambridge is 1, and in Southborough is 1.

Massachusetts became the sixth state in the union in 1788, and is steeped in history. Boston, the capital city, is home to Harvard University, the John F. Kennedy Museum and Library, the Paul Revere House, and many other historical sites. Massachusetts is home to the New England Pirate Museum in Salem, the Minute Man National Historical Park, and the Sleepy Hollow Cemetery, both in Concord. Four past presidents were born in Massachusetts; John Adams, John Quincy Adams, John F. Kennedy and George H. W. Bush. Other famous Massachusetts people include actors Leonard Nimoy and Bette Davis, composer and conductor Leonard Bernstein, and historical figures Susan B. Anthony, Edgar Allan Poe, Paul Revere, and Benjamin Franklin.

According to 2005 Census estimates, Massachusetts has a population of 6,398,743. Of this population, 1,419,389 are under the age of 18 and 848,924 are at or above the age of 65.