Symptoms of Severe Allergic Reactions
Is my baby having an allergic reaction?
Allergic reactions to food typically occur within two hours of consuming the allergenic food--and often begin within minutes.There is, however, a small percentage of babies who may experience a delayed allergic reactions, typically due to FPIES.
Generally, the more of the allergen consumed, the more severe the reaction is likely to be, so it is important to start small when introducing new foods. Lastly, baby may not have an allergic reaction the first time they are exposed to the food, so be watchful on the second and subsequent exposures.
If you think baby is having an allergic reaction, call emergency services immediately.
What are signs of food allergies in babies?
Symptoms of an allergic reaction vary from baby to baby, and can range from mild to severe. Generally, the severity of a reaction is judged by how many symptoms are present and the severity of those symptoms. Before introducing allergens, it is important to know how to recognize the signs of an allergic reaction.
Symptoms of severe allergic reactions in babies:
More severe reactions may include any of the following, either alone or in combination:
Shortness of breath, wheezing, repetitive cough
Pale, ashen or bluish skin
Swelling of face, lips, or tongue
Widespread hives on body
Repetitive vomiting or diarrhea
Sudden tiredness/lethargy/seeming limp
If your child is having any of the above symptoms, call 9-1-1/local emergency services immediately and request an ambulance equipped with epinephrine. Do not wait.
How to Administer Epinephrine to Babies & Toddlers
How to administer epinephrine to babies
Delayed symptoms & FPIES
FPIES (Food Protein-Induced Enterocolitis Syndrome) is a type of food allergy in children that can be severe and life-threatening. Unlike most allergic reactions (which can occur within minutes), FPIES allergic reactions occur within hours after consuming a particular food. For this reason, FPIES is sometimes known as a delayed food allergy. The most common food culprits of FPIES are cow’s milk products (such as formula), soy, oats, and rice, followed by other foods such as avocado, banana, barley, eggs, green beans, peas, meats, poultry, seafood, squash, and sweet potatoes. FPIES is extremely rare in exclusively-breastfed infants.
The classic presentation of FPIES is an infant who recently switched from breast milk to formula or has started solid food. Baby typically begins vomiting between 1 to 4 hours and may also begin experiencing diarrhea between 5 to 10 hours after ingesting the trigger food. Other symptoms include low blood pressure, low body temperature, extreme pallor, repetitive vomiting, and significant dehydration. Thankfully, most cases of FPIES will completely resolve during toddlerhood. Babies with FPIES should be in the care of an allergist/immunologist and are best served by a multidisciplinary team that also includes their general pediatrician or family practitioner, a pediatric gastroenterologist, and a registered dietician.
A 6-month-old baby vomits in his sleep during an FPIES reaction.
How do I tell the difference between an eczema flare-up and an allergic reaction?
While babies with severe eczema are at a significantly increased risk of developing food allergy, it is important to note that most babies with eczema do NOT have a food allergy. In fact, only one third of moderate-severe eczema cases in babies can be directly associated with food allergens. Ingestion of a food allergen can result not only in immediate skin symptoms (redness, hives, itching, swelling), but can also result in a delayed flare-up of pre-existing eczema. Therefore, it can be difficult to know if baby's eczema is occurring on its own, or if it was triggered by a previously unrecognized food allergen. For the most part, IgE-mediated allergic reactions to foods will appear quickly (within a few minutes to 2 hours after ingestion).
If there are no immediate signs of allergy (skin symptoms, respiratory distress, vomiting/diarrhea, etc.), and the only noted symptom is a delayed eczema flare-up that can be controlled with emollients and/or topical anti-inflammatory medication, the general recommendation is that the diet NOT be restricted. Eliminating a food from baby's diet in the hopes of clearing up mild or moderate eczema may actually be counterproductive, potentially increasing the risk of baby developing a more serious allergy to that food in the future.
Difference between rashes from acidic foods and an allergic reaction?
If the rash is widespread (such as all over the torso), it is more likely to be an allergic reaction and you should seek immediate medical guidance. Contact rashes from acidic foods (such as lemon, orange, pineapple, and tomato) usually show up in a limited area where baby’s skin came in contact with food, such as the chin. Contact rashes typically dissipate within 10 minutes of a gentle cleanse, and there tend to be no other symptoms.
Rashes that occur both after touching or eating food may also be associated with hives and itching. This type of rash may or may not go away on its own, and persistent rashes may require medication or medical attention. If the rash does not resolve quickly after gentle cleansing, call your doctor for guidance. There is a chance that the reaction might become more serious if left untreated.
Critical info for caregivers
Should you or your caregiver ever need to call 9-1-1/your local emergency services, things will move more quickly if you have the information below ready at-hand (this info is good to put in your own phone and on your refrigerator/wall for caregivers):
Birth date
Weight
Address
Insurance card (photo of, copy of)
Nearest hospital (or preferred hospital)
Special health info (e.g., baby was born prematurely at 30 weeks, etc.)
Written by:
Dr. S. Bajowala, MD, FAAAAI. Board-Certified Allergist & Immunologist
On this page
- 1.
FARE, Common Questions. [website]. (retrieved March 3, 2020)
- 2.
Nowak-Węgrzyn, A., Chehade, M., Groetch, M. E., Spergel, J. M., Wood, R. A., Allen, K., Atkins, D., Bahna, S., Barad, A. V., Berin, C., Brown Whitehorn, T., Burks, A. W., Caubet, J.-C., Cianferoni, A., Conte, M., Davis, C., Fiocchi, A., Grimshaw, K., Gupta, R., … Greenhawt, M. (2017). International consensus guidelines for the diagnosis and management of food protein–induced enterocolitis syndrome: Executive summary—Workgroup Report of the Adverse Reactions to Foods Committee, American Academy of Allergy, Asthma & Immunology. Journal of Allergy and Clinical Immunology, 139(4), 1111-1126.e4.
Ready to get started?
Download the app to start your journey.
Expert Tips Delivered to Your Inbox
Sign up for weekly tips, recipes and more!
We use cookies to give you the best experience on our website, as detailed in our Privacy Policy. By using this website, you consent to this use of cookies.
The content offered on SolidStarts.com and the Solid Starts App is for informational purposes only and has been created with typically developing babies and children in mind. The information here, including but not limited to suggestions on how to cut or prepare particular foods and the size and shapes of particular foods, is generalized for a broad audience. Your child is an individual and may have needs or considerations beyond generally accepted practices. If your child has underlying medical or developmental differences, we strongly recommend and encourage you to discuss their feeding plan and when and how to start solids and finger food with your child's doctor, health care professional, nutritionist or expert in pediatric feeding and eating (“Health Care Providers”). Solid Starts is not engaged in rendering professional advice, whether medical or otherwise, to individual users or their children or families. No content on this site or app, regardless of date, should ever be used as a substitute for child-specific, one-on-one advice from your pediatric medical or health professional or for direct medical advice from your Health Care Providers.
By using this website or app, you acknowledge that you understand that it is impossible to fully eliminate all risk of a baby or child choking on any liquid, puree, or food. We advise you to follow all safety protocols we suggest to create a safe eating environment and to make educated choices for your child regarding their specific needs. Never disregard professional medical advice or delay in seeking it because of something you have read or seen here.
By accessing the content on SolidStarts.com or our app, you acknowledge and agree that you are accepting responsibility for your child’s health and well-being. In return for Solid Starts providing you with an array of content on “baby-led weaning,” toddlers, and picky eaters, you waive any claims that you or your child may have as a result of utilizing the content Solid Starts provides. Always seek the advice of your Health Care Providers with any questions you may have regarding your child’s development and capacity for starting solid foods.