The number of days for a baby’s egg allergy to heal itself is mostly related to the severity of the allergy and the individual’s physical condition. If the degree of allergy is more serious, you need to go to the hospital emergency room for symptomatic treatment. Egg allergy in infants is mainly due to the poor development of the child’s gastrointestinal function and physical intolerance caused by the main manifestations of the skin appear large or scattered red spots, rashes and so on. Some children may also experience breathing difficulties, vomiting, abdominal pain, diarrhea, intestinal cramps and other symptoms, which can be life-threatening in severe cases. Usually, if an infant’s allergy symptoms are mild, with no obvious abnormality, most of them can recover on their own within 1-3 days after being detached from the allergen. However, if the allergic symptoms are severe, the child should go to the nearest hospital for emergency treatment in time to prevent serious consequences. As to when the child can recover completely, it is necessary to combine the specific symptoms and the degree of sensitivity to drugs to determine. After an infant develops an egg allergy, it is important to drink plenty of water to help expel the allergen as soon as possible, eat a light, digestible diet, and do not add new types of supplemental food in the near future.