Egg allergy reactions vary from person to person and usually occur soon after exposure to egg. Egg allergy symptoms can include: 
Skin inflammation or hives — the most common egg allergy reaction
Nasal congestion, runny nose and sneezing (allergic rhinitis)
Digestive symptoms, such as cramps, nausea and vomiting
Asthma signs and symptoms such as coughing, wheezing, chest tightness or shortness of breath
 Anaphylaxis A severe allergic reaction can lead to anaphylaxis, a life-threatening emergency that requires an immediate epinephrine (adrenaline) shot and a trip to the emergency room. Anaphylaxis signs and symptoms include: 
Constriction of airways, including a swollen throat or a lump in your throat that makes it difficult to breathe
Abdominal pain and cramping
Rapid pulse
Shock, with a severe drop in blood pressure felt as dizziness, lightheadedness or loss of consciousness
 Discuss with your doctor any reaction — no matter how mild — you or your child has to eggs. The severity of egg allergy reactions can vary each time one occurs, so even if a past reaction was mild, the next one could be more serious. If your doctor thinks you or your child may be at risk of a severe reaction, he or she may prescribe an emergency epinephrine shot to be used if anaphylaxis occurs. The shot comes in a device that makes it easy to deliver, called an autoinjector.