Final answer:
To evaluate chronic rhinosinusitis, endoscopic examination, imaging tests, cultures or sensitivity tests, considering underlying conditions like allergies or immune disorders, and allergy testing or CBC are important diagnostic steps after partial relief from antibiotics.
Step-by-step explanation:
The patient's recurrent episodes of nasal congestion, headache, fatigue, facial pain, and chronic post-nasal drip, coupled with the partial relief from antibiotics, suggest a case of chronic rhinosinusitis. To evaluate and manage chronic sinus issues effectively, a few diagnostic steps and considerations include:
- An endoscopic examination of the nasal passages to directly observe inflammation and potential structural abnormalities contributing to sinus blockage and drainage problems.
- Imaging tests such as a CT scan or MRI to visualize the sinuses in greater detail; this can help in identifying any obstruction or abnormality.
- Additional laboratory tests, such as cultures or sensitivity tests, especially if an antibiotic-resistant bacterial infection is suspected.
- Considering underlying conditions like allergies or immune disorders that may predispose the patient to recurrent infections and inflammation.
- Advising a complete blood count (CBC) or allergy testing to assess the immune response and allergic sensitivities.
Given the history of antibiotic treatment, it's also important to consider if the cause of the symptoms is not bacterial—possible viral, fungal, or non-infectious etiologies should be explored.