What causes thick nasal discharge in children after influenza B?

Possible causes of thick nasal discharge in children after influenza B: 1. After infection with influenza B virus, the condition may progress further, causing congestion and swelling of the nasal mucosa, leading to thick nasal discharge. 2. When children are infected with influenza B, their immune systems actively respond to the virus, which may increase nasal secretions and result in thick nasal mucus. 3. In some cases, influenza B may trigger complications such as rhinitis or sinusitis, both of which can cause thick nasal discharge. Thick nasal discharge following influenza B in children is a comprehensive manifestation of disease progression, immune response, and potential complications. Parents should closely monitor their child's symptoms. If thick nasal discharge persists or worsens, prompt medical attention is recommended to avoid delaying treatment.