I take flonase for sinus but left side still feels pressure that's goes to my eye and head. really uncomfortable. cause? what can i do?

Sinusitis: If Flonase hasn't relieved the symptoms, you may have a blocked sinus and need to see a physician. Osteopathic physicians can sometimes check to see if it is related to poor motion within the facial bones from an injury as well as prescribe antibiotics if it is an infection.

Many reasons: Congestion on only one side is often due things like deviated septum or nasal polyps, for example, that are not treated nasal sprays. Sinus infections can also cause pressure on one side and may not resolve with sprays. Migraines may cause pain of the eye and head on only one side. You should discuss your symptoms with your doctor, who can help determine the cause and best treatment for you.