Dizziness after upper respiratory tract infection may be caused by virus which is a normal phenomenon after upper respiratory tract infection or due to virus crossing the blood-brain barrier and causing central nervous system infection.
1. Normal phenomenon after upper respiratory tract infection: vasospasm after viral infection, increased nasal secretions, blockage, and elevated nasal pressure can cause dizziness, which is a normal phenomenon after infection.
2. Viruses penetrate the blood-brain barrier and cause central nervous system infections: some special viruses can cross the blood-brain barrier and cause meningitis and brain parenchyma infections. Dizziness and headache are the main manifestations, which may be accompanied by nausea and vomiting, fever and other symptoms.
It is recommended that patients with the above symptoms go to the hospital in time, complete the relevant examinations under the guidance of professional doctors and receive standardized treatment.