Dr. Mohammad Shofique (Emergency Medicine) needs a second opinion on this medical case.
### 21 years old boy presents with nasal blockade associated with headache on and off since 5 years. He has consulted many doctors before but he hasn't got any permanent cure. His recent X-Ray PNS is shown below which shows maxillary and ethmoidal sinusitis. His X-Ray Nose Lateral view is within normal limits and his Chest X-Ray PA view is also within normal limits. What treatment should be prescribed for this case?