I have been experiencing a constant sensation of mucus dripping from the back of my nose into my throat for the past 2–3 months. The mucus does not come out through my nose, but instead accumulates in my throat, giving me a frequent urge to cough or clear it. During this period, I had two infections: one ear infection and one tonsil infection; both of which were treated with antibiotics. However, the post-nasal drip sensation has persisted despite treatment. There is no significant nasal discharge, but I feel mucus stuck in the throat most of the time.