DCS; also known as 

divers' disease, 

the bends or 

caisson disease) describes a condition arising from dissolved gases coming out of solution into bubbles inside the body on depressurisation. DCS most commonly refers to problems arising from underwater 

diving decompression (i.e., during ascent), but may be experienced in other depressurisation events such as emerging from a 

caisson, flying in an 

unpressurised aircraft at altitude, and 

extravehicular activity from spacecraft. DCS and 

arterial gas embolism are collectively referred to as 

decompression illness~

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