Children with allergic cough are mainly allergic to themselves. After contact with allergens, such as smelling special odor, touching oil fume, cold air, eating special food, etc., it will lead to higher airway surface reaction and increased secretion of mast cells, which will lead to airway spasm and cough. This cough usually occurs in the morning and evening, or after exercise. The etiology is usually related to immune function. When children's immune function is low or immune disorder, allergic symptoms will appear. After avoiding allergens and anti-allergic treatment, symptoms can be alleviated. Allergic cough in children has the following symptoms, 1, allergic cough in children. The main symptoms are dry cough and less phlegm. Most symptoms are more serious at night or early in the morning. It also has the characteristics of persistence and suddenness. Usually, when a patient coughs, it sometimes hurts the patient's lungs. When patients cough for a long time, parents should pay attention to avoid more serious diseases and take their children to the hospital for examination and treatment in time.

The reason of children's allergic cough is that children are sensitive, have some allergic factors, and most of them have family allergic history. In the contact environment, there are some allergic substances in food, which can induce allergic reaction and cough.

Allergic cough's allergic reaction is type I allergic reaction, which is mainly caused by allergen stimulating respiratory mucosa epithelium, leading to degranulation of mast cells, accompanied by some local inflammatory reactions of eosinophils, causing tracheal spasm, increased secretion and cough symptoms.

The allergic factors are usually dust mites, dust, fish and shrimp, milk, eggs, some cold air and chemical gases, which can cause allergic cough in children.