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Allergist vs. Allergologist: What's the Difference?

By Harlon Moss & Janet White || Updated on March 4, 2024
An allergist and an allergologist refer to the same profession, focusing on diagnosing and treating allergies, with no significant difference between the terms.

Key Differences

An allergist is a medical doctor specialized in identifying, diagnosing, and treating allergic reactions and autoimmune diseases. This specialization includes managing conditions like asthma, eczema, and allergic rhinitis. On the other hand, an allergologist is another term for the same medical profession, used interchangeably with allergist in different regions or contexts. Both terms describe a physician with expertise in the immune system and its reaction to various allergens.
While "allergist" is commonly used in the United States, "allergologist" might be more prevalent in other English-speaking countries or regions. However, the distinction does not imply any difference in training, skills, or professional focus. Both professionals undergo extensive medical education followed by specialized training in allergy and immunology.
The roles of an allergist and an allergologist include conducting allergy tests, prescribing medications, and advising on lifestyle adjustments to manage or mitigate allergic reactions. Regardless of the term used, these specialists are equipped to offer comprehensive care for patients suffering from allergic conditions.
Furthermore, both allergists and allergologists engage in research and education to advance the understanding of allergic diseases and their management. They play a crucial role in developing new treatments and educating patients and the public about allergy prevention and care.
Despite the different nomenclature, there is no practical difference in the services provided by an allergist and an allergologist. The choice of term largely depends on geographical location and personal or institutional preference, without reflecting any variance in qualification or expertise.

Comparison Chart


A medical doctor specialized in allergies
A medical doctor specialized in allergies

Common Usage

Predominantly in the United States
Used interchangeably with allergist


Allergy and immunology
Allergy and immunology


Medical degree and specialized training
Medical degree and specialized training

Professional Role

Diagnosing and treating allergic diseases
Diagnosing and treating allergic diseases

Allergist and Allergologist Definitions


Expert in managing asthma, eczema, and allergic rhinitis.
My allergist prescribed a new inhaler for my asthma.


Identical to an allergist, focusing on allergic disease management.
The allergologist explained the results of my allergy tests in detail.


A physician specializing in the diagnosis and treatment of allergic conditions.
The allergist recommended a series of skin tests to identify the specific allergens.


Utilizes tests to identify allergens and prescribes medication.
The allergologist recommended an epinephrine auto-injector for emergencies.


Advises on allergy prevention and lifestyle changes.
The allergist suggested changes in my diet to avoid allergens.


Diagnoses and treats conditions caused by immune system responses.
The allergologist helped me understand my allergic reactions to pollen.


Conducts allergy testing and offers treatment plans.
The allergist provided a comprehensive management plan for my food allergies.


Engages in scientific research to improve allergy treatments.
My allergologist published a paper on innovative allergy desensitization techniques.


Involved in allergy research and education.
My allergist is conducting a study on the efficacy of new allergy medications.


Provides advice on avoiding allergens and managing reactions.
The allergologist advised me on how to create an allergen-free environment at home.


A physician specializing in the diagnosis and treatment of allergies.


A scientist who studies allergology (the medicine of allergies)


A doctor who specializes in the treatment of allergies.


(rare) An allergist physician specializing in treatment of allergies.


A physician skilled in the diagnosis and treatment of allergies.


What is an allergist?

An allergist is a medical doctor specialized in diagnosing, treating, and managing allergies and immune system disorders.

What qualifications do you need to become an allergist or allergologist?

Both require a medical degree, followed by specialized training in allergy and immunology.

Which term is more commonly used, allergist or allergologist?

"Allergist" is more commonly used in the United States, while "allergologist" may be found in other English-speaking regions, but usage can vary.

Can allergists/allergologists prescribe medication?

Yes, they are licensed to prescribe medications to treat allergic conditions.

Is there a difference between an allergist and an allergologist?

No, there is no significant difference; the terms are used interchangeably to describe the same medical specialty.

How do allergists/allergologists treat allergies?

Treatment can include medication, immunotherapy (allergy shots), lifestyle changes, and avoidance strategies.

Do allergists treat food allergies?

Yes, allergists are experts in diagnosing and managing food allergies.

Can an allergist help with asthma?

Yes, since asthma is often linked to allergies, allergists are experts in managing and treating asthma.

Can allergists/allergologists provide emergency treatment for allergic reactions?

They can provide guidelines for emergency treatment and prescribe emergency medication like epinephrine auto-injectors.

What does an allergologist do?

An allergologist performs the same functions as an allergist, focusing on allergy diagnosis, treatment, and management.

What types of tests do allergists/allergologists perform?

They perform skin tests, blood tests, and other diagnostic procedures to identify allergens.

What’s the difference in training between an allergist and a general practitioner?

An allergist has additional specialized training in allergies and immunology beyond the general medical training a GP receives.

How do I know if I need to see an allergist/allergologist?

If you have symptoms of allergies or asthma that impact your quality of life or if over-the-counter medications do not provide relief, you should see an allergist/allergologist.

Are allergists involved in research?

Yes, allergists and allergologists often participate in research to advance the understanding and treatment of allergic conditions.

How long does it take to become an allergist/allergologist?

After medical school, it typically requires an additional 3-4 years of residency in internal medicine or pediatrics, followed by 2-3 years of specialized fellowship training in allergy and immunology.

Can allergists/allergologists treat eczema?

Yes, since eczema can be related to allergies, they can offer treatments and management strategies.

What is immunotherapy?

Immunotherapy, often provided by allergists/allergologists, is a treatment method that gradually desensitizes the body to allergens.

Are allergists/allergologists pediatricians?

Some allergists/allergologists also have training in pediatrics, but not all are pediatricians. They can treat both children and adults.

Can allergists perform surgery?

Allergists do not typically perform surgery; their focus is on medical management of allergic and immunologic conditions.

What lifestyle changes might an allergist/allergologist recommend?

Recommendations can include dietary adjustments, environmental modifications to reduce allergen exposure, and strategies to manage stress, which can exacerbate allergies.
About Author
Written by
Harlon Moss
Harlon is a seasoned quality moderator and accomplished content writer for Difference Wiki. An alumnus of the prestigious University of California, he earned his degree in Computer Science. Leveraging his academic background, Harlon brings a meticulous and informed perspective to his work, ensuring content accuracy and excellence.
Co-written by
Janet White
Janet White has been an esteemed writer and blogger for Difference Wiki. Holding a Master's degree in Science and Medical Journalism from the prestigious Boston University, she has consistently demonstrated her expertise and passion for her field. When she's not immersed in her work, Janet relishes her time exercising, delving into a good book, and cherishing moments with friends and family.

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