<unk>  is classified by symptoms. The earliest descriptions of<unk>  used the terms: "bends" for joint or skeletal pain; "chokes" for breathing problems; and "staggers" for neurological problems. In 1960, Golding et al. introduced a simpler classification using the term "Type I ('simple')" for symptoms involving only the skin, musculoskeletal system, or lymphatic system, and "Type II ('serious')" for symptoms where other organs (such as the central nervous system) are involved. Type II<unk>  is considered more serious and usually has worse outcomes. This system, with minor modifications, may still be used today. Following changes to treatment methods, this classification is now much less useful in diagnosis, since neurological symptoms may develop after the initial presentation, and both Type I and Type II<unk>  have the same initial management.<unk>  illness and dysbarism The term dysbarism encompasses<unk> , arterial gas embolism, and barotrauma, whereas<unk>  and arterial gas embolism are commonly classified together as<unk>  illness when a precise diagnosis cannot be made.<unk>  and arterial gas embolism are treated very similarly because they are both the result of gas bubbles in the body. The U.S. Navy prescribes identical treatment for Type II<unk>  and arterial gas embolism. Their spectra of symptoms also overlap, although the symptoms from arterial gas embolism are generally more severe because they often arise from an infarction (blockage of blood supply and tissue death).
Decompression sickness
Morning sickness
Ski sickness
Wooden chest syndrome
Acute HME syndrome
Simulator sickness
Chronic mountain sickness
Acute chest syndrome