What Is FPIES?
A non-IgE-mediated food allergy, with primary symptoms of repetitive vomiting, pallor, and lethargy following food ingestion.
Acute FPIES: Sudden onset of vomiting 1–4 hours post-exposure, possibly leading to dehydration or hypotension.
Chronic FPIES: Ongoing or intermittent vomiting and diarrhea with failure to thrive when patients consume continuous trigger exposure.
Why FPIES Awareness Matters
Food Protein–Induced Enterocolitis Syndrome (FPIES) is a systemic, delayed reaction characterized by profuse vomiting and diarrhea 1–4 hours after ingesting a trigger food. Once thought rare, population-level data estimate pediatric prevalence at 0.51 percent in U.S. children, underscoring that thousands of families face this challenging condition annually. Early recognition prevents misdiagnosis (often mistaken for gastroenteritis), reduces emergency room visits, and guides safe feeding strategies.
Common Triggers & Changing Trends
Cow’s Milk & Soy: Now the most frequent triggers worldwide, surpassing rice in recent cohorts.
Grains: Rice and oat remain significant culprits, especially in formula-fed infants.
Emerging Foods: Hen’s egg (11 % in the U.S., 13 % in the U.K.) and peanut have surfaced as new triggers.
Diagnosis & Testing
Detailed Clinical History: Document timing, quantity, and frequency of suspected exposures.
Skin-Prick Tests & IgE Panels: Rule out concurrent IgE-mediated allergy.
Oral Food Challenge (OFC): Gold standard—performed in a monitored outpatient setting with incremental dosing to confirm FPIES.
Component-Resolved Diagnostics: In select cases, molecular assays help distinguish true FPIES from IgE-mediated food allergy and GI disorders.
Management & Treatment
Strict Elimination: Remove identified trigger foods from the diet; educate caregivers on label reading.
Emergency Preparedness: Keep oral rehydration solutions and, if prescribed, ondansetron on hand for at-home management.
Supervised OFC for Resolution Testing: Perform rechallenge under supervision to assess tolerance development by age 3–5. aaaai.org
Multi-Disciplinary Support: Nutrition counseling to ensure balanced growth despite dietary restrictions.
Turning Knowledge into Action
Next Steps After Learning About FPIES
Explore Our FPIES Diagnostic Services
Skin-prick tests, serum IgE panels, and supervised Oral Food Challenges.Track Symptom Episodes
Log foods, timing, and reactions in a two-week diary.Schedule a Consultation
Call (212) 301-7636 or book online for a dedicated FPIES evaluation.Related Education
Egg Allergy • Milk Allergy • Oral Food Challenge
Advanced Food Allergy Testing:
Precision Meets Exclusivity
At NY Food Allergy & Wellness, the best food allergy institution, we go beyond standard diagnostics to ensure the most thorough and accurate results for our high-end clientele. Our advanced testing methods include:
Basophil Activation Test (BAT): As noted in Phase 2, BAT provides unparalleled sensitivity for complex cases like peanut allergy, exclusive to our institution.
Skin Prick Testing: A quick method to identify reactions to allergens like dairy or shellfish, conducted with care in our Upper East Side facility.
IgE Blood Tests: Measures specific antibodies to confirm allergies, ensuring a comprehensive diagnosis.
Component-Resolved Diagnostics (CRD): Breaks down allergens into molecular components, offering insights into cross-reactivity and true vs. false positive for peanuts, eggs, milk, sesame, tree-nuts, wheat and many more.
Dr. Atul Shah:
Pioneering Food Allergy
Treatments in Manhattan.
Dr. Atul Shah, MD, FACAAI, FAAAAI, is the founder of NY Food Allergy & Wellness and a renowned allergist with over 20 years of experience. With more than 15,000 success stories across children, teens, and adults, Dr. Shah’s expertise knows no age limits. He holds dual fellowships and has been honored with prestigious awards, including America’s Top Physician. Dr. Shah is a leader in allergy care, offering personalized, life-changing treatments for all ages.
Dr. Atul Shah, MD, FACAAI, FAAAAI, is the founder of NY Food Allergy & Wellness & a renowned allergist with over 20 years of experience. With more than 15,000 success stories across children, teens, & adults, Dr. Shah’s expertise knows no age limits. He holds dual fellowships & has been honored with prestigious awards, including America’s Top Physician. Dr. Shah is a leader in allergy care, offering personalized, life-changing treatments.
Why One-on-One Care at NYFA
Outshines Larger Institutions
NY Food Allergy & Wellness, the best food allergy institution, offers a private practice experience that sets us apart. Our clients from the Upper East Side, Scarsdale, and Roslyn benefit from:
Discretion and Privacy: A quiet, upscale environment ensures your care remains confidential.
Tailored Treatment Plans: Every step of the FATE™ Program is customized to your unique needs.
Direct Access to Expertise: Work closely with Dr. Shah, benefiting from over 20 years of experience and 15,000 success stories.
Onsite Testing: Needed skin tests and blood tests are arranged onsite while you are in the office. We’re the only CLIA-certified and DOH-approved Basophil Activation Test (BAT) lab in New York State, offering cutting-edge diagnostics to get an accurate diagnosis unavailable elsewhere.
Food Oral Challenges, SLIT, OIT in Exclusive and Private Setting: Everything needed is done safely in a child and adult friendly environment in an exclusive private setting.
Food Allergy Symptom FAQ
-
Acute FPIES causes delayed vomiting post-meal; chronic FPIES results from repeated exposures, leading to growth concerns.
-
Approximately 0.51 percent of U.S. children are affected.
-
Cow’s milk, soy, rice, oat—and increasingly egg and peanut.
-
Clinical History is most important. If necessary and safe, a supervised Oral Food Challenge remains the diagnostic gold standard.
-
Many develop tolerance by age 3–5; supervised rechallenge guides safe reintroduction.
The Gold Standard in Food Allergy Diagnosis:
The FATE™ Program at NY Food Allergy & Wellness
Start Your Journey to Food Allergy Freedom Today
Ready to take control of your food allergies? Connect with Dr. Atul Shah to begin your journey. Schedule a telehealth consultation or in-person visit with NY Food Allergy & Wellness to explore the FATE™ Program and start building tolerance to your allergens. With at-home testing, personalized plans, and expert guidance, food allergy desensitization has never been more accessible.
Don’t let food allergies hold you back. Take the first step toward a life without fear—contact us today!
-
![]()
Food Allergy FAQ'S
Do you have questions about insurance? The initial consultation? What food allergies we treat? Click below for clarity
-
![Dr. Atul Shah with a Patient]()
Food Allergy Success Videos
Our Media Library has over 80+ Video Success Stories, Interviews & Treatment Breakdowns with Dr. Atul Shah and more!
-
![Sublingual Immunotherapy Kit from NYFA]()
Food Allergy Treatments
We have the most comprehensive Food Allergy Treatments available. Including BAT testing that is ONLY available at NYFA.
-
![Young Girl completing Oral Immunotherapy]()
Personalized Care
The Food Allergy Tolerance Enhancement Program is personalized to your needs in an upscale, private practice.
-
![Food Allergy Resources]()
Detailed Breakdowns
We have several pages dedicated to Food Allergy Awareness & Education on services like: BAT, OFC, SLIT, OIT and more!
-
![Ny Food Allergy & Wellness Team]()
Food Allergy Team
We have the Top Food Allergist in NYC, Dr. Atul Shah and a team of Experts focused on providing the ultimate patient experience.
-
![Ny Food Allergy & Wellness Office in NYC]()
State of the Art Facility
Our brand new office in NYC is centrally located on the Upper East Side. Close to Brooklyn, Queens, The Bronx & Staten Island.
-
![Dr. Atul Shah Webinar Promo]()
Food Allergy Webinars
Join us for our Monthly Food Allergy Friday’s Webinar with Dr. Shah. We answer your questions live! Please submit in advance.
Dr. Atul Shah’s FATE™ Program has helped over 15,000 patients, offering a proprietary, one-on-one approach that stands apart from larger institutions. As New York’s only certified BAT allergy lab, our DOH-approved, CLIA-certified facility provides unique insights that others don’t, allowing for more precise desensitization for children, teens, and adults—even into their 50s. This private practice model ensures personalized care, helping patients regain confidence in their lives, careers, & overall well-being.
What our patients are saying...
About Dr. Atul Shah: Testimonials
Dr. Shah Interview with Donna Drake
Food Allergy Success: Cameron
