How to determine if postnasal drip is causing coughing
Generally, cough caused by postnasal drip is diagnosed through methods such as nasal endoscopy, electronic nasopharyngoscopy, nasal endoscopy, sinus CT scans, and allergen testing. Detailed analysis is as follows:
1. Nasal Endoscopy
Examines the interior of the nasal cavity, including the condition of the nasal mucosa, presence of congestion or swelling, and the nature and quantity of nasal secretions. This helps determine whether nasal conditions such as rhinitis or sinusitis exist and assesses their severity.
2. Electronic Nasopharyngoscopy
Examines the nasopharynx and observes for signs such as accumulation of secretions or lymphoid follicle hyperplasia. This test helps identify the exact location and cause of postnasal drip, providing important information for treatment planning.
3. Electronic Laryngoscopy
Examines the oropharynx, particularly the posterior pharyngeal wall and base of the tongue, for signs such as secretions, lymphoid follicle hyperplasia, pharyngeal mucosal congestion, and presence of sputum. These pathological changes are often the direct causes of irritative cough due to postnasal drip, and this examination helps further clarify the underlying cause.
4. Sinus CT Scan
Assesses the severity of sinusitis and determines whether anatomical abnormalities exist in the nasal cavity and sinuses. Sinus CT scans are important for understanding the extent and severity of sinusitis and for planning appropriate treatment strategies.
5. Allergen Testing
Determines whether the patient has allergies to substances such as dust mites or pollen. Identifying specific allergens helps patients avoid exposure, thereby reducing episodes of postnasal drip.
These diagnostic tools help physicians comprehensively understand the patient's condition and formulate individualized treatment plans. During treatment, patients should also follow medical advice, maintain healthy lifestyle and dietary habits, and promote recovery.