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Usually, the infection starts from one side of the maxillary sinus. It can spread through the other sinuses when not treated immediately. Clogged nose can also contribute to the pressure-like pain that he feels behind the nose. The pain around the eyes and the pressure from the cheeks causes blurred vision. When both sides of the maxillary sinus have infection, there is a tendency that vision from both eyes will also become blurry.
Common symptoms of acute sinusitis include nasal congestion, thick green nasal discharge, fever, headache, tiredness and facial pain. Some symptoms depend on which sinus is inflamed. For example: Frontal sinusitis (behind the forehead) can cause pain in the forehead and pain that gets worse when lying on your back. Ethmoid sinusitis (behind the bridge of the nose) can cause pain between the eyes, eyelid swelling, loss of smell, and pain when touching the sides of the nose. Sphenoid sinusitis (behind the eyes) can cause earaches, neck pain or headache at the top of the head or deep behind the forehead. Maxillary sinusitis (behind the cheeks) can cause pain in the cheeks, under the eyes, or in the upper teeth and jaw.