A food allergy can cause: Itching or swelling in your mouth Vomiting ... With sinusitis, you may have thick mucus, postnasal drip, cough, sore throat, and fatigue. Whereas with allergies, you mainly ...
Other symptoms that may be related to post-nasal drip and need medical attention can include: Coughing that lasts more than 10 days Increased throat pain Productive cough with yellow-green or gray ...