Sinusitis, now commonly referred to as sinusitis, is primarily caused by purulent secretions from bacterial infections that irritate structures, leading to symptoms such as toxic headaches and dizziness. During sinusitis, blockage of the sinus openings can cause negative pressure within the sinus cavity, which may also lead to pressurized headaches. Additionally, if sinusitis is accompanied by hypertrophy of the nasal turbinates or a deviated nasal septum, it can stimulate a nerve reflex causing neuralgic headaches. Therefore, it is certain that clinical sinusitis or paranasal sinusitis can cause headaches.