In some people, a food allergy can trigger a severe allergic reaction called anaphylaxis (a·nuh·fuh·LAK·suhs). This can cause life-threatening symptoms that make it hard to breath.  

Some of the symptoms of anaphylaxis you might see in a baby include: 

  • Swelling of the lips, face or tongue 
  • Widespread hives over the body 
  • Wheezing 
  • Repeated coughing 
  • Difficulty breathing 
  • Swelling of the throat 
  • Skin color changing to pale or blue 
  • Sudden tiredness or lethargy 
  • Seeming limp