Medically reviewed by William Truswell, MD Postnasal drip occurs when mucus from your nasal passages drips down the back of ...

Unless you're a smoker, chronic cough has three major causes: postnasal drip, asthma (the most likely of lung diseases that can cause coughing) and gastroesophageal reflux disease, better known as ...

This can lead to symptoms like nasal congestion or discharge, post-nasal drip, headache, and pressure around your eyes, forehead, and cheeks. Chronic sinusitis can be caused by abnormal growths in ...

Symptoms include a post-nasal drip, stuffiness ... Nasal polyps are linked to chronic inflammation from asthma, allergies, or infections. Medications can shrink nasal polyps.