What is the cause of yellowish nasal mucus in the morning

The yellowish nasal discharge in the morning may be caused by acute rhinitis secondary to bacterial infection, sinusitis, and may also be caused by nasal sinus malignant tumor secondary to infection. 1. Acute rhinitis secondary bacterial infection: usually associated with viral infection, when secondary bacterial infection, it will make the morning nasal discharge yellow, may also be accompanied by nasal congestion, fatigue, fever, nausea, vomiting and other symptoms. 2. Sinusitis: yellowish nasal discharge in the morning, which may be accompanied by dizziness, sneezing, nasal congestion and other symptoms. 3. Nasal sinus malignant tumor secondary infection: tumor tissue breakage, secondary bacterial infection, will lead to yellow nasal discharge in the morning. The yellowish nasal discharge in the morning may also be the rupture of nasal cysts, etc. If accompanied by obvious symptoms, it is recommended to consult a doctor as soon as possible to clarify the cause of the disease and give targeted treatment.

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