Why do I feel an intense pressure in my sinuses when an airplane descends?

Why do I feel an intense pressure in my sinuses when an airplane descends?

1. Introduction The intense pressure experienced in the sinuses during an airplane descent is clinically referred to as aerosinusitis or sinus barotrauma. This painful phenomenon occurs because of the rapid increase in ambient cabin pressure as the aircraft loses altitude, combined with a failure of the paranasal sinuses to equalize their internal pressure. The inability … Read more