What are the symptoms of Influenza A in children?
Feb 13, 2025
Source: Cainiu Health
Dr. Ren Yi
Introduction
Under normal circumstances, symptoms of influenza A in children include fever, cough, nasal congestion and discharge, muscle pain, nausea, and vomiting. When a child exhibits these symptoms, parents should closely monitor the child's physical condition and seek timely medical attention, following the doctor's recommendations for treatment. At the same time, it is important to ensure proper personal protection for the child to prevent cross-infection.
Generally, symptoms of influenza A in children include fever, cough, nasal congestion and discharge, muscle pain, nausea, and vomiting. A detailed analysis is as follows:
1. Fever
Influenza A virus replicates within children's bodies, stimulating the immune system to produce pyrogens that act on the body's temperature-regulating center, causing the body temperature to rise above 39°C and persist for several days, often accompanied by chills and shivering.
2. Cough
Influenza A virus reproduces within the epithelial cells of the respiratory tract, triggering an inflammatory response that stimulates the respiratory mucosa to produce secretions, thereby inducing a cough reflex. Sore throat or discomfort may also occur. In severe cases, the cough may affect the child's eating and speaking abilities.
3. Nasal Congestion and Discharge
Influenza A virus may adhere to the nasal mucosa and subsequently invade the mucosal cells, causing nasal mucosal congestion and edema, which leads to localized inflammation and nasal discharge. This may cause breathing difficulties in children, particularly noticeable during nighttime sleep.
4. Muscle Pain
Influenza A virus causes the accumulation of metabolic products such as lactic acid in the body. Additionally, the inflammatory response triggered by the virus stimulates nerve endings, resulting in generalized muscle or joint pain in children, accompanied by muscle stiffness and a feeling of weakness, affecting the child's daily activities.
5. Nausea and Vomiting
Influenza A virus may invade the gastrointestinal mucosa, leading to gastrointestinal dysfunction. Some children with influenza A may experience gastrointestinal symptoms such as nausea and vomiting, causing loss of appetite, further affecting nutrient intake and physical recovery.
When children exhibit the above symptoms, parents should closely monitor their child's health condition and seek timely medical attention, following the doctor's recommendations for treatment. Additionally, attention should be paid to the child's personal protection to prevent cross-infection.
