Egg allergies are one of the most common food sources of allergy, especially in children, according to the Mayo Clinic. Late onset egg allergy, or developing signs of allergy after childhood, is not as common. In fact, children usually outgrow the allergy. Symptoms of such a reaction to eggs can occur within a few minutes or hours after consumption or exposure to eggs, foods containing eggs or similar products. Some vaccines, processed foods and some condiments are less obvious sources of egg proteins that can result in an allergic reaction. Egg allergy signs and symptoms are not always the same from person to person.
Skin Reactions
The Mayo Clinic points out that inflammation of the skin is the most common sign of egg allergy. The skin may be red, itchy or develop hives. KidsHealth.org reports eczema can develop as can redness or swelling around the mouth after consumption of egg products. A pediatrician can recommend treatment for these problems. Sometimes this includes taking an antihistamine to block the body's reaction to the allergen. Adults who experience these reactions can also benefit from antihistamine use.
Gastrointestinal Symptoms
The consumption of egg proteins can lead to several negative effects in the gastrointestinal system. Examples include painful cramps, bloating, nausea or vomiting. There may be benefits in taking stomach-soothing medications to treat these symptoms of allergy, but only under the advice of a pediatrician. Adults who experience these symptoms can get relief from over-the-counter medications to treat these symptoms.
Rhinitis
Rhinitis refers to inflammation of the nasal passages and respiratory tract. Egg product consumption in children with allergies can lead to a runny nose, itchy eyes, watery eyes and sneezing. Asthma attacks can increase and coughing or wheezing can occur in children who do not have asthma. Just like the skin reactions, an antihistamine can relieve these symptoms.
Anaphylaxis
Exposure to eggs or egg products can result in a life-threatening response called anaphylaxis. This reaction requires immediate medical attention and sometimes an adrenaline shot can be administered while seeking emergency care. When this severe reaction begins an individual may notice itching in the throat as it swells. A lump may be fel,t making it difficult to breathe or swallow. Soon, blood pressure will drop significantly and the pulse will increase. An individual may experience pain and cramping in the abdomen. Anaphylaxis can progress to the point of dizziness, lightheadedness, loss of consciousness and even suffocation.


