The history given by a patient of sinusitis suffices much of the time to diagnose the condition. Delicacy over the sinuses on weight further affirms the determination. A physical examination done by the doctor will preclude or affirm conditions, for example, nasal polyps, veered off nasal septum, nasal tumor, dental caries, and so forth that might be a reason for sinusitis.

Certain examinations may be carried out to affirm sinusitis thought these are seldom done :

• X-beam of sinuses to distinguish disease, obstacle, tumors, and so on.
• Nasal endoscopy: This method includes the section of a slender, adaptable fiber-optic tube (endoscope) through the nose into the sinuses so as to analyze the inner part of the sinuses.
• Computerized Tomography filter (CT check) or Magnetic Resonance Imaging (MRI) can uncover the better points of interest of the sinuses particularly those that are not distinguished by an endoscope.
• Allergy tests may be carried out to discount any sort of hypersensitivities .
• Blood tests may be carried out to discount HIV .
• A research facility society of material scratched structure the nose may be carried out to preclude bacterial disease in case patient is not responding to the ongoing treatment.