Potential Causes
a. Allergies: Consider exposure to allergens such as pollen, dust, or pet dander.
b. Recurrent infections: These might indicate underlying issues such as sinusitis or immune system concerns.
c. Environmental factors: Dry air or pollutants could irritate nasal passages.

Recommendations
a. Lifestyle: Use a humidifier and ensure adequate hydration.
b. Medication: Antihistamines like cetirizine can help manage symptoms.
c. Consult: Seek medical advice to explore underlying causes and appropriate treatments.

Note
Avoid self-medicating if symptoms persist.