 [ Symptoms ] i started having intense sharp constant pain behind my right eye right temple area and backside of the right side of my head [ Disease ] after careful reading to your history i believe that your problem as you guessed is better with antibiotics so it is related to the chronic sinusitis but the antibiotics made a good effect in the beginning as it kills the bacteria …not the virus as the viruses are not affected by antibiotics … you should work on your immunity by vitamin c intake in all forms nasal lavage with black sea salted water bee honey and ginger