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In observance of the holidays, all offices will be closed from December 24th through December 26th. We'll resume regular operations on December 27th, and close again for New Year's Eve and New Year's Day.  Wishing you a happy and healthy holiday season! 

Oak Brook Allergists
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    • Downers Grove: (630) 789-0575
    • Elmhurst: (630) 574-0460
    • Naperville: (630) 961-2960
    • Plainfield: (815) 609-8286
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    • David J. Knysak, MD
    • Raymond M. Pongonis Jr., MD
    • Zachary E. Rubin, MD
    • Jennifer Catalfio, PA-C
    • Tammy Laas, APRN-CNP
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    • Allergic Rhinitis (Hay Fever)
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allergy doctor Downers Grove IL

How to Prepare for an Allergy Doctor Visit

November 3, 2023

allergy doctor assists child asthmatic patien

If seasonal hay fever is suddenly upon you, or if you notice oral, respiratory, or skin symptoms after eating certain foods or  experiencing a change in climate, you are ready for a visit with an allergy doctor. Your allergist is an expert in the triggers for and treatment of seasonal, insect, Read More

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Allergic Rhinitis and Hay Fever: Seeking Relief and Long-term Solutions with Allergist Expertise

October 26, 2023

Allergist Consulting a Patient

Seasonal allergies create havoc with a variety of symptoms thatlimit energy, food choices, outdoor activities, and more. If you want long-term solutions to your allergic rhinitis, education and treatment are keys to your health and comfort. Let’s learn more about this chronic respiratory Read More

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How Can an Allergy Doctor Help You?

September 8, 2023

Allergist assists young asthmatic patient

As springtime blossoms and summer approaches, many people find themselves sneezing, coughing, and dealing with itchy eyes. Some might brush off these symptoms as a seasonal cold. However, they could be the signs of a more persistent problem: allergies. An allergy doctor, also known as an Read More

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How to Choose the Right Allergy Doctor for You

August 11, 2023

Sensitive Skin, Food allergy symptoms, Irritation. Doctor dermatolog and patient

Allergies symptoms, such as sneezing, runny nose, itching, and congestion can make your routine activities challenging. While allergies, whether common seasonal allergies or severe reactions, cannot be cured, they can be managed. If you have allergies or allergy-induced asthma that is holding you Read More

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What to Expect from an Allergy Specialist

June 2, 2023

Skin prick allergy test performing by Allergy specialist

An allergy specialist, otherwise known as an allergist or immunologist, is a medical doctor who is specially trained in the field of immunology and offers diagnosis and treatment to patients with allergies, asthma, sinus and ear infections, and other immunological problems. If you have allergies Read More

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When Should You See an Allergist?

April 21, 2023

Allergist checking patients skin

Living with allergies can be difficult, but getting the right care and help to manage them doesn’t have to be. Whether you are suffering from common seasonal allergies or a more severe reaction, visiting an allergist can make a world of difference in your overall quality of life. An allergist is Read More

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11 Signs You Need a Doctor for Allergies

January 13, 2023

Allergy doctor analysing patients skin allergy

An allergist is a medical doctor who specializes in allergy and asthma diagnosis, treatment, and management. Allergists are also trained in immunology, which is the study of the immune system. This means they understand how your immune system works and what causes it to go into overdrive, which Read More

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Tips for Living with an Allergy Diagnosis

January 28, 2022

Young boy getting an allergy test done

If you’re living with an allergy, you’re most likely familiar with the misery it brings –with how it can impair your work performance and render you unable to find enjoyment in your day-to-day activities. Fortunately, there are steps you can take to keep it from interfering with your quality of Read More

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FAQs About Allergies

January 21, 2022

Woman blowing her nose by plants

According to statistics, allergies affect an estimated 50 million Americans each year, ranking as the sixth leading cause of chronic illness in the country. If you are experiencing symptoms that you suspect to be caused by an allergy, you have one powerful tool that can help you with your Read More

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At Oak Brook Allergists, our asthma and allergy specialists offer comprehensive care for Allergic Rhinitis (Hay Fever), Asthma, Chronic Sinusitis, Eczema & Hives, Food Allergies, Pet Allergies, and Stinging Insect Allergies.