Causes

Egg allergy is a hypersensitivity to proteins in eggs or egg products.

The immune system sees these proteins as a “threat”, and releases antibodies that will diffuse the protein. The antibodies, called immunoglobulin E (IgE), release histamine and other chemicals to fight that protein. These chemicals cause the allergic symptoms.

Symptoms 

• Wheezing, difficulty breathing
• Runny nose, congestion
• Hives
• Swelling of the lips, eyes, face, tongue and/or throat
• Mouth tingles or is itchy
• Skin rash (note: eczema is a common skin condition often associated with food allergies, see your doctor for proper diagnosis)
• Diarrhea
• Loose stools
• Dizziness, lightheadedness
• Cramps
• Vomiting
• Coughing
• Asthma
• Anaphylaxis (can occur in some severe cases) Anaphylaxis is when the throat swells making breathing difficult because the airways constrict.  Other symptoms may include a rapid pulse, dizziness, shock, and lightheadedness.  This is life threatening and needs to be treated immediately by a clinician.