Can sinusitis cause dizziness?
In general, whether sinusitis can cause dizziness depends on the specific severity of the sinusitis and individual differences. If discomfort occurs, it is recommended to seek medical attention promptly. The detailed analysis is as follows:

Sinusitis may cause dizziness. When the inflammation is severe and purulent secretions accumulate in the sinuses, nasal airflow can become obstructed, leading to insufficient oxygen supply to the brain and resulting in dizziness, often accompanied by a heavy or stuffy sensation in the head. Additionally, inflammatory stimulation of nerves around the sinuses or compression of adjacent tissues may affect vestibular function, causing dizziness. This type of symptom is more commonly seen in patients with frontal or maxillary sinusitis.
If sinusitis is mild, presenting only with slight nasal congestion and minimal discharge, and does not involve the nerves or tissues surrounding the sinuses, dizziness typically does not occur. Some individuals may have a higher tolerance to inflammatory stimuli, or may successfully control the progression of inflammation through timely interventions, thereby avoiding dizziness and experiencing only localized nasal discomfort.
To relieve nasal discomfort, drink plenty of warm water to keep the respiratory tract moist and reduce nasal dryness. Maintain a light diet and avoid spicy or irritating foods to minimize inflammatory triggers. Ensure adequate rest and avoid excessive fatigue to reduce physical strain. Keep indoor air circulating and moderately increase humidity, while avoiding exposure to irritants such as dust and smoke. For significant nasal congestion, gentle nasal irrigation can help clean the nasal passages and improve airflow.