A condition associated with exposure to very low or rapidly changing atmospheric pressure.

Symptoms include pain in or near joints, giddiness, headache, numbness of limbs, chest pain, and shortness of breath. When it occurs in a severe form, it is sometimes called “decompression sickness” or “the bends”.

Inflammation of the ear; aero-otitis; aviator's ear: Aerotitis especially affects the middle ear due to failure of the eustachian tube to remain open during sudden changes in barometric pressure. This may occur during flying, diving, or working in a pressure chamber.

Barotitis is an ottic barotrauma caused by abrupt atmospheric pressure change, such as may affect the crew and passengers of aircraft during flight, particularly during descent.

Altitude dysbarism is another term for an inflammation of the ear caused by pressure changes when auditory tubes are obstructed and which occurs commonly in aviators and divers.