Barotitis
Middle ear problems due to changing atmospheric pressures, as when a plane descends to land.
The problems include ear pain, ringing, diminished hearing and, sometimes, dizziness.
The word barotitis (pronounced bar-o-tit-is) is compounded from bar- as in barometer + otitis meaning inflammation of the ear.
Alternate terms include aerotitis, aerotitis media, barotitis media, and otic barotrauma