Allergists, who are also referred to as immunologists, are medical professionals specializing in the prevention, diagnosis, and treatment of immune system disorders. These conditions may manifest as allergic responses to various triggers such as tree and grass pollen, specific foods, medications, pet dander, insect stings, and more.

Diseases related to the immune system can vary widely, ranging from mild respiratory allergies to more severe conditions like asthma, eczema, immunodeficiency disorders, autoimmune diseases, and acquired immune deficiency syndrome (AIDS).

An allergist or immunologist can assist in easing the symptoms associated with allergic reactions, thus enhancing the overall quality of life for individuals suffering from allergies. Allergy testing can identify the source of the reaction, and multiple treatment options, including allergy shots, may help lessen or completely eliminate the reaction.