Compressed air sickness, which is also known as decompression sickness or the bends, is a condition that occurs when a person is exposed to sudden changes in pressure. This can happen when diving, in certain medical treatments, or even in high altitude environments. In addition to compressed air sickness, other synonyms for this condition include caisson disease, altitude sickness, and barotrauma. Symptoms can range from mild (such as joint pain or fatigue) to severe (including paralysis or death). Treatment typically involves oxygen therapy and gradual decompression. It is important to be aware of the risks associated with compressed air sickness and to take appropriate precautions when engaging in activities that involve sudden pressure changes.