We are open and have all precautions in place to see patients safely, protecting our patients is our priority
847 888 8802
review quote icon

Patient Reviews

Read More
Allergy Crystal Lake - Fan Choice Aword Dr. Hahn
Allergy Crystal Lake - Fan Choice Aword Dr. Askenazi

Patients in Illinois ask an Allergist, “How are food allergies diagnosed?”

How are food allergies diagnosed
For more Information Contact Us

Allergic reactions to foods may present in various ways, including hives, rashes, intestinal discomfort, shortness of breath, anaphylaxis, or allergic rhinitis. The allergy occurs through two interactions of the immune system.

First, immunoglobulin E, (IgE) a form of protein that is referred to as an antibody circulates in the blood. For some individuals, this antibody will form in reaction to certain foods. This condition is generally inherited from parents, who may have experienced any form of allergy, including hay fever, asthma, or hives. When an individual eats an allergen food, the body forms excess amounts of the antibody, IgE, which is released and attaches to mast cells, specific cells that exist in all body tissue.

The second factor is the interaction of the antibody with the mast cells, which are commonly located in areas of the body that are susceptible to allergic reactions, such as skin, throat, nose, lungs, and stomach. The location of the mast cells will determine the type of allergic reaction symptoms. When the antibody attaches to the mast cell, chemicals such as histamine are released. If the interaction occurs with mast cells in the nose, throat, or ears, a respiratory or oral reaction may occur. If the chemicals are released in the gastrointestinal tract, the reaction may present as vomiting, pain, or diarrhoea. Skin mast cells often produce hives.

For patients who experience food allergies, identification of the allergy is critical. At Advanced Allergy and Asthma Associates, Dr. Noga Askenazi and her colleagues, Dr. Eugenia Hahn, specialize in the diagnosis and treatment of asthma and allergies, including allergies to foods, pets, insect bites, eye allergies, and allergic rhinitis.

Board-certified allergists, Drs. Askenazi, and Hahn, offer several diagnostic options, in three Illinois locations, to determine the food allergen, including:

  • Skin testing – two methods of skin testing include a skin prick test, delivering results within minutes, or a skin patch test, performed over several days
  • Bloodwork evaluation
  • Oral challenge – a food challenge involves the patient consuming suspected food allergens under close supervision to effectively determine the cause of allergy

Patients who suffer from allergies or asthma can restore their quality of life by understanding and be treating their conditions. Advanced Allergy and Asthma Associates offices are located in Elgin, and Crystal Lake, Illinois. Appointments may be scheduled by phone at 847 888 8802 or online.


Back to Home

Dr. Noga Askenazi, Advanced Allergy & Asthma Associates

Advanced Allergy & Asthma Associates

Dr. Noga Askenazi | Dr. Eugenia Hahn | Meredith Cirrincione

Dr. Noga Askenazi is a nationally recognized asthma and allergy specialist who is board certified in pediatric and adult allergy. Her areas of special interest are innovative treatment of rashes, sinusitis, food allergies, asthma and immune disorders. She was past President of the ISAAI (Illinois Society of Allergy, Asthma, & Immunology), works on state and national committees for advancement of the allergy field and is a consultant for Advocate, AMITA, Northwestern amongst other health care systems. Her joy is helping patients reach their goals after together determining best treatments. Her staff and patients are a chosen family, and she invests in their happiness. She enjoys gardening, biking and cooking to good music.

Dr. Eugenia Hahn is a highly recognized board certified allergist and immunologist who treats patients of all ages. Her areas of special interest are food allergy, eczema, and asthma. She is president of the Illinois Society of Allergy & Asthma, a National Committee leader of the American Academy of Allergy, Asthma, and Immunology, a member of the American College of Allergy, Asthma, and Immunology working on new treatment options for patients. She is a consultant for Advocate, Northwestern, AMITA, Northwest Community healthcare systems amongst many others. Her patients mean everything to her as she takes pride in finding the why behind the problem. She enjoys reading and spending time with her family.

Meredith Cirrincione is a board certified Physician Assistant and specializes in treating allergies, with a focus on asthma, rashes, environmental allergies, chemical and food allergies. She holds a Masters in Physician Assistant Studies from The Chicago Medical School - Rosalind Franklin University of Health Sciences. She is a Fellow member of the American Academy of Physician Assistants, the Illinois Academy of Physician Assistants, and the Association of PAs in Allergy, Asthma and Immunology. She likes to approach things holistically. She is a strong patient advocate and adored by her patients. She enjoys singing, reading, cooking, and the great outdoors.