The paranasal sinuses are air-filled cavities located within the skull, communicating with the nasal cavity through the ostiomeatal complex. The inner ear, responsible for balance and equilibrium, is located in close proximity to the sinuses. The lateral wall of the sphenoid sinus, for example, is adjacent to the internal auditory canal, which contains the vestibulocochlear nerve (3).
A sinus infection, or sinusitis, can indeed cause vertigo, often as a result of inflammation and fluid buildup affecting the inner ear's balance mechanisms. While most common sinus symptoms involve congestion and facial pain, the anatomical proximity of the sinuses to the ears means that pressure changes can disrupt the vestibular system, leading to a sensation of spinning or unsteadiness. How a Sinus Infection Triggers Vertigo