decompression sickness

noun

: a sometimes fatal condition that is caused by the release of gas bubbles typically of nitrogen as it leaves its dissolved form throughout the body upon a rapid decrease in barometric pressure (such as that experienced by the rapid ascent of a diver from a deep dive or the rapid ascent of a pilot to high altitudes in a poorly pressurized aircraft) and that is marked chiefly by joint pain which may be accompanied in mild forms by fatigue and itching or burning of the skin and in more severe forms by shortness of breath, chest pain, paralysis, and confusion

called also bends, caisson disease

Examples of decompression sickness in a Sentence

Recent Examples on the Web
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Authorities believe the death was caused by decompression sickness. Barbie Latza Nadeau, CNN Money, 19 May 2026 Maldives presidential spokesperson Mohamed Hussain Shareef said earlier that the search was suspended after Mohamed Mahudhee, a member of the Maldivian National Defense Force, died of underwater decompression sickness after being transferred to a hospital in the capital on Saturday. Mohamed Sharuhaan, Los Angeles Times, 18 May 2026 Maldives presidential spokesperson Mohamed Hussain Shareef said the search was suspended after Mohamed Mahudhee, a member of the Maldivian National Defense Force, died of underwater decompression sickness after being transferred to a hospital in the capital on Saturday. CBS News, 17 May 2026 Mohamed Mahdi, a member of the Maldivian National Defense Force, died from decompression sickness during the dangerous mission, Maldives presidential spokesman Mohamed Hussain Shareef said. Stephen Sorace, FOXNews.com, 17 May 2026 See All Example Sentences for decompression sickness

Word History

First Known Use

1941, in the meaning defined above

Time Traveler
The first known use of decompression sickness was in 1941

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Cite this Entry

“Decompression sickness.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/decompression%20sickness. Accessed 24 May. 2026.

Kids Definition

decompression sickness

noun

Medical Definition

decompression sickness

noun
variants also decompression illness or decompression syndrome
: a sometimes fatal condition that is caused by the release of gas bubbles typically of nitrogen as it leaves its dissolved form throughout the body upon a rapid decrease in barometric pressure (such as that experienced by the rapid ascent of a diver from a deep dive or the rapid ascent of a pilot to high altitudes in a poorly pressurized aircraft)

Note: Decompression sickness is marked chiefly by joint pain and is often accompanied in mild forms by fatigue and itching or burning of the skin frequently with discoloration. More serious forms may manifest with shortness of breath, chest pain, numbness, muscle weakness or paralysis, visual disturbances, incontinence, confusion, and hypovolemic shock. Individuals affected with decompression sickness are typically treated in a hyperbaric chamber.

called also bends, caisson disease

see aeroembolism, choke entry 2 sense 2

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