What type of pain is indicative of Type II Decompression Sickness (DCS)?

Type II Decompression Sickness (DCS) is characterized by symptoms that involve more systemic and serious manifestations compared to Type I DCS. One of the hallmark signs of Type II DCS is pain that can be described as abdominal or thoracic pain, which often radiates or spreads to other areas of the body. This is indicative of potential damage to the spinal cord or other vital organs, associated with the release of nitrogen bubbles into the bloodstream following rapid decompression after a dive.

While localized joint pain can be a symptom of Type I DCS, the more serious presentation of Type II affects larger areas and organs, making abdominal and thoracic pain particularly relevant. Severe headache and symptoms like nausea and vomiting can occur, but they are not definitive indicators of Type II DCS. They may suggest other diving-related issues but lack the specific characteristics that would suggest the involvement of critical organs or systems typically seen in Type II DCS cases. Understanding the distinction between these symptoms helps divers and supervisors identify and manage potential risks more effectively.