what causes congestion
The constant dripping associated with post nasal drip typically causes irritation and congestion, and may be accompanied by consistent urges to clear your throat and blow your nose. Irritants, dairy, dry climates, smoking, colds, flu and pregnancy may cause post nasal drip.
Part 2 Treating Airplane Ear or Congestion Caused by Pressure. 1. Treat blockage in the inner ear, often called airplane ear.. If you are flying, or driving in high altitudes, you may experience airplane ear.. Fast changes in altitude cause air pressure changes and can trigger airplane ear.