How are infant food allergies daignosed?

Allergy test. We allergists prefer a prick skin test and we do it in the office and it is relatively painless. There are also blood tests, but depending on the lab you go to and the technique they use, some are not that reliable.
Taking a History. Food allergy diagnosis is very dependent upon having the patients history. If the history is suspicious for food allergy then skin test and /or blood testing may be done to verify or refute the history.

Related Questions

What are symptoms of infant food allergies?

Many possible ones. Symptoms of infant food allergies can include poor weight gain, hives, bloody diarrhea, severe eczema, facial/eyelid/tongue/lip/throat swelling, itching, chest tightness, wheeze, vomiting, abdominal pain, rapid pulse, dizziness, low blood pressure, fainting, and/or respiratory or cardiac arrest. Please see your child's doctor or an allergist asap for evaluation if you suspect a food allergy. Read more...
Eczema/hives/asthma. Infants with food allergy frequently present with eczema. Acute reactions to foods such as nuts may present as hives. In infants food allergy may contribute to asthma. Read more...

How can I handle mild food allergies in my infant?

Avoidance. For food allergies, avoidance is the best option. However, if the food is a nutritionally important food such as milk or wheat, it may be best to be tested to make sure. An allergist can help decide if you child has a food allergy, give tips on avoidance, prescribe an epi pen for severe allergies, and decide when to test if the food allergy is decreasing since some are outgrown. Read more...
Avoid suspect foods. Babies in their first few months of eating solid foods have a variety of baby foods to choose from. Use each new flavor for 3 days, to see if there is any rash, fussiness, or undesirable changes in the poop. If some mild symptoms occur, the baby can skip that flavor for now, but consider trying it again 6 months later. If the symptoms occur again, then the child can avoid that food item. Read more...
Avoidance. I often test for allergies on foods for infants with eczema (skin pb) or recurrent sinus infections. Allergy testing can identify unsuspected food items & give an idea of intensity. Low intesity items can often be eaten on a rotation diet. Major food reactions are rare, but deserve rigerous avoidance & preparation. (read lables, epipen) many kids grow more tolerant of trouble foods with age. Read more...
Have Patience... Feeding an allergic child takes planning, self-education, creativity...And patience! but if you practice careful avoidance, your child may actually outgrow food allergies. On the other hand, when they eat foods they're allergic to, even if the consequences seem minor, the allergies are more likely to last--and possibly to become more severe. So, how do you spell relief? A-v-o-i-d-a-n-c-e! Read more...
Diagnosis. Before you can avoid; need to determine exactly what your child is allergic to. Then a nutritionally sound diet can be determined. Avoidance is necessay but only to real allergens. Withholding nutritionally good foods when there is no need to may compromise the child's nutrition and make preparing foods more of a problems then it needs to be. Read more...
Recognize first... Based on clinical history and suspicion. Then test correlative to the history. If any positives show up, you should avoid and re-test at frequent intervals to determine if your child has outgrown the allergy. And please do not underestimate food allergies, always carry an epi injector if symptoms are anything beyond eczema flaring. Read more...

Need expert help here. What are the symptoms of infant food allergies?

Food allergy symptom. In general, there are 3 ways food allergy can present. The most dramatic one that we often refer to is immediate reaction that can cause hives, nausea, vomiting, throat closing and can be life threatening. Other types of food allergy can be more subtle and present chronically like esophagitis, gastroenteritis, colitis (difficulty swallowing, abdo pain, bloody stool...) or eczema. Read more...

Do infants have food allergies that will eventually go away if their parents do not have those food allergies?

Symptom variation. Many foods that register positive on pin prick or blood tests in infancy will end up being better tolerated as they get older. Some food allergies are quick ige mediated that are major & some are slow igg mediated & minor. The ige type can be lifelong & very dangerous. Specific issues should be discussed with the kids doc or allergist to get a better idea of your situation. Read more...
Yes. Most food allergies in infants go away in time whether or not their parents have those allergies. Food allergies that cause eczema are more like to go away (or at lease decrease) in a year or 2. Those that can cause life threatening anaphylaxis may still resolve with time but may not go away with the same frequency. Food allergy can often be diagnosed with a history & prick skin tests. Read more...