Food allergies Flashcards
how long does an IgE mediated response take
it comes immediately
true or false: IgE and non IgE mediated responses can resolve by childhood
true - although non IgE mediated are more likely to resolve faster
what is the presentation of an IgE mediated response
urticaria, angioedema, vomiting, diarrhoea, asthma, anaphylaxis
what is food associated exercise induced anaphylaxis
where exercising within 2 hours of being exposed to a food allergen results in anaphylaxis
how long does a non IgE mediated response take
delayed (hours to days) after exposure
what is the presentation of a non IgE mediated response
eczema, proctocolitis, enterocolitis, eosinophilic oesophagus
what is proctocolitis
bright red blood in stools
what is enterocolitis
varying GI problems including cramps, vomiting and feed refusal
what is eosinophilic oesophagus
symptoms from oesophageal inflammation (vomiting, reflux, dysphagia)
what are cross reactive allergens
foods which share the same proteins so may also be allergic to
what tests may be done to determine a food allergy
- skin prick tests
- blood tests to see if its IgE mediated
- elimination of food from diet
what tests redone to determine pyloric stenosis
ultrasound to look at muscle thickness and capillary gas to see if blood is alkaline and electrolyte levels
what is pyloric stenosis
thickening of the stomach muscle making the stomach sphincter smaller
what are skin prick tests
where some allergen is inserted just under the skin to see if a small rash appears - the bigger the size of the circular rash the more likely you are to be allergic to the substance
if a young baby has vomiting after feeds, weight loss, hunger after feeding what are the likely causes
- milk allergy
- GI reflux
- pyloric stenosis
