By analogy with other types of allergies in children underFood allergy is a state of intolerance to food, which is based on JgE-mediated immune responses. As allergens are the proteins of cow's milk, eggs, fish, seafood, nuts, soy, wheat. Total known for more than 160 substances that can cause allergy symptoms in children, but the symptoms do not depend on what the allergen was the cause of it.
Symptoms of food allergies are varied, similar to manifest and other types of allergy in children.
- Anaphylaxis or systemic allergic reactions:
- immediate type
- Delayed type.
- Skin reactions (dependent IgE):
- sharp - angioedema and urticaria
- chronic - atopic dermatitis.
- Gastrointestinal form:
- food allergy syndrome
- Immediate gastrointestinal form.
- Respiratory form:
- nasal allergy
- allergic asthma.
Cutaneous manifestations of food allergy - the most common in children a reaction to food.
Acute urticaria is characterized by the appearance on theitchy skin bumps, blisters merge into different shapes and sizes. The rash is accompanied by itching and burning sensation, the child becomes restless, trying to comb the affected skin. Sometimes the appearance of urticaria, angioedema portends (angioedema), in which there is swelling of the eyelids, lips, ears, a dangerous development of laryngospasm and suffocation.
Atopic dermatitis - a manifestation of chronic,developing within 2-3 months of food allergy. On the skin of the child, especially in the cheeks, forehead and chin there is persistent redness, later appearing itchy blisters filled with serous contents. Bubbles burst, in their place are formed erosion, covers serosanguineous crusts. Agonizing itching makes combing baby skin in the affected area, which contributes to the disease.
Sometimes the process captures the body, internalthe surface of the hands and feet, to 1.5-2 years of skin lesions in places becomes dry, wrinkled, rough. Appearing in acute itchy bumps merge into large pockets of infiltration, especially noticeable in the area of the armpits, the folds of the elbow and popliteal pits.
Among the manifestations of food allergy arein second place after the skin symptoms. Signs of intolerance to cow's milk sometimes appear in the maternity hospital if the baby finish feeding with formula milk. Lack of appetite, nausea, vomiting, diarrhea, abdominal pain, forcing the child to cry and twist legs, talk about the violation of the digestive process.
Allergies can manifest itself in the form of esophagitis,gastritis, gastroenteritis, enterocolitis, colitis. Its manifestations depend on the level of the lesion, after the food the child has itching and swelling of the lips, tongue and oral mucosa. esophagitis Clinic is characterized by severe pain when swallowing food, regurgitation. Mild allergic enteritis occur as intestinal colic, accompanied by bloating, anxiety and crying child. In severe cases, there is loose stools with mucus and blood. Once the food allergen is removed from power, the state malyscha normalized.
In young children with food allergiesrespiratory system is affected is quite rare, especially in isolated form. If we are affected by the respiratory tract, the symptoms of allergies in children are developing in conjunction with the skin, and gastrointestinal symptoms. As an alternative form of respiratory allergy occurs allergic rhinitis and asthma manifested by itching, runny nose, sneezing, wheezing, whistling, shortness of breath, feeling of fullness in the chest. The respiratory form of allergy occurs in 60% of children with intolerance to cow's milk.
Food allergies in children can occur inin the form of severe anaphylactic shock (0,8-9%). Anaphylaxis - a common allergic reaction in which there are a variety of skin, gastrointestinal and respiratory allergy, compared to them having expressed violations of cardiovascular activity, often leading to death.