Which of the following is not classified as a type of DCS?

DCS, or decompression sickness, is classified into different types based on the symptoms and the physiological impacts on the body. DCS Type 1 is characterized by mild symptoms such as joint pain and skin rashes, while DCS Type 2 involves more serious symptoms affecting the central nervous system, lungs, and other organs.

In this context, Type A DCS and Type B DCS refer to specific classifications that may align with the symptoms and severity of decompression incidents, where Type A typically indicates less severe manifestations and Type B indicates more severe ones.

However, "DCS Type 2" is indeed a recognized classification of decompression sickness. The distinction lies in the terminology used within the diving medical community, leading to confusion around whether these classifications are formally recognized across all texts or practices. Since DCS Type 1 and DCS Type 2 are widely acknowledged terms for types of decompression sickness, the selection of a classification such as "Type B DCS" instead of the explicit use of "DCS Type 2" points to why the latter would not be listed as a classification of DCS in the same way that the former two are. Thus, recognizing that some terminologies may not be correctly matched to established classifications